You can optionally provide a value for each input and/or output parameter associated with the stored procedure. All parameters defined in a stored procedure selected in the tree view appear on the Parms tab. Input parameters are identified by either a P (for input) or a B (for input/output) in the I/O column. Output parameters are identified by an O in the I/O column.
You assign a value to an input parameter using one of the following methods:
If you want to store the value of an output parameter as the stored procedure executes, set the Allow Output Side Files option to True. This enables you to specify a side file or a special register to hold the value.