Comparison failed because of type

Hi experts,

LOOP AT tmdrm INTO wmdrm WHERE /bic/zsplit =         source_fields_rule-gl_account.           pf = wmdrm-/bic/zpcfrom.           pt = wmdrm-/bic/zfromto.           IF source_fields_rule-profit_ctr >= pf AND           source_fields_rule-profit_ctr <= pt.             wa_y_rmaccnt = wmdrm-/bic/y_rmaccnt.           ENDIF.         ENDLOOP.         RESULT = wa_y_csaccnt.       ENDIF.     ENDIF.

I have an issue with my code, it's not working as i expected because follwing my debugging tests at this level:

IF source_fields_rule-profit_ctr >= pf

I am comparing source_fields_rule-profit_ctr which is type char with pf which is type i.

I tried to convert them into the same format with some FM but the result is always wrong.

Any ideas how can i bypass this issue?

Thanks for your support.

Amine