Multiple calls of same function module do NOT initialize variables ?

Question

Hi all,
..so its my fist post here, this is a bit strange problem for me and maybe someone knows whats happening.
So I have in SAP Solution Manager a function module 'Z', which calls a standard SAP class CL_SPROJECT_SOLAR_BASE_REPORT, which in turn calls the standard function module 'SPROJECT_GET_ADMIMP_SCREEN_BP'.
During development, things worked fine, but now I run my Z-Program for more than one instance and even I do all FREE for the Class, apperently the function module SPROJECT_GET_ADMIMP_SCREEN_BP, which is called by the class CL_SPROJECT_SOLAR_BASE_REPORT, does not get it's variables from the global data of the function pool re-initialized, when it is called for the second, 3rd, ... time.
This is a bit strane behavior for me, I would have expected that variables in a function module (or even in the global data of that function pool) get re-initialized each time that function module is called ?
Actually, this is the only function in that function pool.
Well, if not, does anyone has an idea how I can get the variables of this module pool re-initialized between the calls ? More concrete, the global data of function pool SAPLSPROJECT_SOLAR_ADMEVAL_BP define:
DATA: g_v_with_var TYPE char1.
In the function module line 36 (no reference to g_v_with_var, no module call, no changes to g_v_with_var before the IF-statement at all) it is querying:
  IF g_v_with_var IS INITIAL.
So this is my problem, the second time I am calling the class  (which is 'free'ed and re-created between the calls) which calls this function module the 'g_v_with_var' is not initial and there seems to be no way to have it set to initial again ?
So even thought this is in SolMan, I think the question & problem is a ABAP technical one ?
Any thoughts, help or support would be very much appreciated,
thank so much,
Frank

Answer 1

Hi Mae,
..thanks a lot for your fast reply, unfortunately there is only one function and no functions or forms at all for initializing. The variable I am fighting with is g_v_with_var and that is referenced only 4 times in the whole function pool:
Global Data:   101 DATA: g_v_with_var TYPE char1.
Function Module SPROJECT_GET_ADMIMP_SCREEN_BP (which is the only function module):
    36   IF g_v_with_var IS INITIAL.
   127       g_v_with_var = airep_true.
   193         CLEAR g_v_with_var.
If in line 36 g_v_with_var is 'X', which it is always after the first call, the function will exit with an exception, so line 193 to clear it will actually never be executed...and it is not cleared  the next time the function module is called, so you never get back to have the function run...
All the best,
Frank