Udev rule on raspberry pi not triggering

Just for context: I currently try to detect Huawei USB modems that get inserted into a raspberry pi running on Raspbian and automatically start a service with the device as input using udev rules.

I am currently at the beginning and try to just trigger a udev rule for this stick (it is already switched to modem mode with usb-modeswitch):

Bus 001 Device 008: ID 12d1:1001 Huawei Technologies Co., Ltd. E161/E169/E620/E800 HSDPA Modem

I tried the following three rules, all of which apparently did not trigger:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="12d1', ATRRS{idProduct}=="1001", RUN+="touch /home/pi/test"

SUBSYSTEM=="usb", ATTRS{idVendor}=="12d1', ATRRS{idProduct}=="1001", RUN+="touch /home/pi/test"

ATTRS{idVendor}=="12d1', ATRRS{idProduct}=="1001", RUN+="touch /home/pi/test"

The output from pi:

pi@raspberrypi:~ $ udevadm info --attribute-walk --name /dev/ttyUSB0

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0/ttyUSB0/tty/ttyUSB0':
    KERNEL=="ttyUSB0"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0/ttyUSB0':
    KERNELS=="ttyUSB0"
    SUBSYSTEMS=="usb-serial"
    DRIVERS=="option1"
    ATTRS{port_number}=="0"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.2/1-1.1.2:1.0':
    KERNELS=="1-1.1.2:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="option"
    ATTRS{supports_autosuspend}=="1"
    ATTRS{bInterfaceProtocol}=="ff"
    ATTRS{authorized}=="1"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bInterfaceSubClass}=="ff"
    ATTRS{bInterfaceClass}=="ff"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bNumEndpoints}=="03"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.2':
    KERNELS=="1-1.1.2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{manufacturer}=="HUAWEI"
    ATTRS{urbnum}=="13"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{devspec}=="  (null)"
    ATTRS{ltm_capable}=="no"
    ATTRS{speed}=="480"
    ATTRS{tx_lanes}=="1"
    ATTRS{bDeviceClass}=="00"
    ATTRS{idVendor}=="12d1"
    ATTRS{bNumInterfaces}==" 3"
    ATTRS{devnum}=="8"
    ATTRS{configuration}==""
    ATTRS{busnum}=="1"
    ATTRS{removable}=="removable"
    ATTRS{quirks}=="0x10"
    ATTRS{bmAttributes}=="80"
    ATTRS{rx_lanes}=="1"
    ATTRS{version}==" 2.00"
    ATTRS{avoid_reset_quirk}=="1"
    ATTRS{maxchild}=="0"
    ATTRS{bMaxPower}=="500mA"
    ATTRS{idProduct}=="1001"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{authorized}=="1"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bcdDevice}=="0102"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{product}=="HUAWEI Mobile"
    ATTRS{devpath}=="1.1.2"
    ATTRS{bDeviceSubClass}=="00"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1':
    KERNELS=="1-1.1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{removable}=="fixed"
    ATTRS{bMaxPower}=="2mA"
    ATTRS{busnum}=="1"
    ATTRS{bcdDevice}=="0bb3"
    ATTRS{idProduct}=="2514"
    ATTRS{bmAttributes}=="e0"
    ATTRS{version}==" 2.00"
    ATTRS{tx_lanes}=="1"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{devnum}=="3"
    ATTRS{ltm_capable}=="no"
    ATTRS{bDeviceProtocol}=="02"
    ATTRS{authorized}=="1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{rx_lanes}=="1"
    ATTRS{urbnum}=="90"
    ATTRS{bDeviceClass}=="09"
    ATTRS{idVendor}=="0424"
    ATTRS{quirks}=="0x0"
    ATTRS{maxchild}=="3"
    ATTRS{devpath}=="1.1"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{speed}=="480"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1':
    KERNELS=="1-1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{removable}=="unknown"
    ATTRS{bcdDevice}=="0bb3"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{version}==" 2.00"
    ATTRS{bMaxPower}=="2mA"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{configuration}==""
    ATTRS{idProduct}=="2514"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{urbnum}=="69"
    ATTRS{rx_lanes}=="1"
    ATTRS{speed}=="480"
    ATTRS{busnum}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{bDeviceClass}=="09"
    ATTRS{tx_lanes}=="1"
    ATTRS{devpath}=="1"
    ATTRS{quirks}=="0x0"
    ATTRS{ltm_capable}=="no"
    ATTRS{maxchild}=="4"
    ATTRS{authorized}=="1"
    ATTRS{idVendor}=="0424"
    ATTRS{devnum}=="2"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="02"
    ATTRS{bNumConfigurations}=="1"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1':
    KERNELS=="usb1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{busnum}=="1"
    ATTRS{idVendor}=="1d6b"
    ATTRS{authorized}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{speed}=="480"
    ATTRS{version}==" 2.00"
    ATTRS{idProduct}=="0002"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{removable}=="unknown"
    ATTRS{bMaxPower}=="0mA"
    ATTRS{devnum}=="1"
    ATTRS{maxchild}=="1"
    ATTRS{rx_lanes}=="1"
    ATTRS{manufacturer}=="Linux 4.19.66-v7+ dwc_otg_hcd"
    ATTRS{devpath}=="0"
    ATTRS{product}=="DWC OTG Controller"
    ATTRS{tx_lanes}=="1"
    ATTRS{bcdDevice}=="0419"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{authorized_default}=="1"
    ATTRS{serial}=="3f980000.usb"
    ATTRS{quirks}=="0x0"
    ATTRS{configuration}==""
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{urbnum}=="30"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{bDeviceClass}=="09"
    ATTRS{interface_authorized_default}=="1"
    ATTRS{ltm_capable}=="no"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bNumConfigurations}=="1"

  looking at parent device '/devices/platform/soc/3f980000.usb':
    KERNELS=="3f980000.usb"
    SUBSYSTEMS=="platform"
    DRIVERS=="dwc_otg"
    ATTRS{spramdump}=="SPRAM Dump"
    ATTRS{wr_reg_test}=="Time to write GNPTXFSIZ reg 10000000 times: 320 msecs (32 jiffies)"
    ATTRS{driver_override}=="(null)"
    ATTRS{regdump}=="Register Dump"
    ATTRS{inv_sel_hsic}=="Invert Select HSIC = 0x0"
    ATTRS{srpcapable}=="SRPCapable = 0x1"
    ATTRS{regoffset}=="0xffffffff"
    ATTRS{hcd_frrem}=="HCD Dump Frame Remaining"
    ATTRS{gnptxfsiz}=="GNPTXFSIZ = 0x01000306"
    ATTRS{gusbcfg}=="GUSBCFG = 0x20001700"
    ATTRS{hnp}=="HstNegScs = 0x0"
    ATTRS{gotgctl}=="GOTGCTL = 0x001c0000"
    ATTRS{srp}=="SesReqScs = 0x0"
    ATTRS{fr_interval}=="Frame Interval = 0x1d4b"
    ATTRS{hptxfsiz}=="HPTXFSIZ = 0x02000406"
    ATTRS{guid}=="GUID = 0x2708a000"
    ATTRS{hprt0}=="HPRT0 = 0x00001005"
    ATTRS{ggpio}=="GGPIO = 0x00000000"
    ATTRS{hnpcapable}=="HNPCapable = 0x1"
    ATTRS{buspower}=="Bus Power = 0x1"
    ATTRS{hcddump}=="HCD Dump"
    ATTRS{bussuspend}=="Bus Suspend = 0x0"
    ATTRS{regvalue}=="invalid offset"
    ATTRS{busconnected}=="Bus Connected = 0x1"
    ATTRS{hsic_connect}=="HSIC Connect = 0x1"
    ATTRS{mode_ch_tim_en}=="Mode Change Ready Timer Enable = 0x0"
    ATTRS{enumspeed}=="Device Enumeration Speed = 0x1"
    ATTRS{gpvndctl}=="GPVNDCTL = 0x00000000"
    ATTRS{rd_reg_test}=="Time to read GNPTXFSIZ reg 10000000 times: 890 msecs (89 jiffies)"
    ATTRS{gsnpsid}=="GSNPSID = 0x4f54280a"
    ATTRS{remote_wakeup}=="Remote Wakeup Sig = 0 Enabled = 0 LPM Remote Wakeup = 0"
    ATTRS{rem_wakeup_pwrdn}==""
    ATTRS{mode}=="Mode = 0x1"
    ATTRS{devspeed}=="Device Speed = 0x0"
    ATTRS{grxfsiz}=="GRXFSIZ = 0x00000306"

  looking at parent device '/devices/platform/soc':
    KERNELS=="soc"
    SUBSYSTEMS=="platform"
    DRIVERS==""
    ATTRS{driver_override}=="(null)"

  looking at parent device '/devices/platform':
    KERNELS=="platform"
    SUBSYSTEMS==""
    DRIVERS==""

Even when googling there seems to be very limited resources on udev. Maybe it didn't click for me yet, but I seem to be lost. Please send help!