CA Global SubSystem › REXX Language in CA-GSS › REXX Global Variables

REXX Global Variables

The global variables are REXX variables that begin with an ampersand (&). One copy of each global variable is maintained in an ISERVE address space, and all IMODs executing in this address space have access to it. In this way, multiple IMODs and multiple executions of the same IMOD can share information. The global variables are initialized using the GLOBVAL initialization parameter.

Note: An uninitialized global variable has a null value, rather than being equal to the variable name.

The global variables have the following restrictions:

• Your global variable names cannot begin with the character sequence &$ (ampersand dollar sign). IMODs supplied by CA Technologies use these characters.
• The DROP instruction does not release the storage of a global variable. The storage is re‑used if the same global variable is re‑assigned.
• The global variables can contain up to 80 characters of data. If you require more characters, pre‑allocate it by using the GLOBVAL initialization parameter or the $GLOBAL() function.