[Q] How to modify parameters is /sys/module/mymodule/

[CharlyBrok]

Hi all,
I xant to enable debug info from module qtouch_obp_ts. (Related to my digitizer problem)

I put in /system/etc/init.d/77debug

#!/system/bin/sh
echo 0xFF > /sys/module/qtouch_obp_ts/parameters/tsdebug

But tsdebug stay at 0.

I'm on cyanogenMod 7.2.

What can I do ?