Hi Gurus, Doubt in Function module

Hi Gurus,

for creating a function module we have to create it under function group.

we can have lot of function modules under a funtion group. and we can have global variables here. it partly acts as class.

doubt here is how can we find how the global variables are getting filled.

i have a scenario, PM_PARTNER_CHECK_COMPLETE in this FM i have a global internal table XIHPA. i need to know how or when this global variable is getting filled.