Basic steps in parameter passing are:

• Creating list parameters in the calling form and passing the list of parameters to the called form by using the CALL_FORM or OPEN_FORM procedure.
• In the called form Define parameters and using those to accept values from the list of parameters passed via the calling form.
• Referencing the values held in the parameters defined in the called form. The steps in passing these parameters from a calling form to the called form are:
• Create a Parameter list object.
• Add parameters to the parameter list
• To the called form Pass the parameter list via the call_form ( ) or the open_form ( ) oracle procedure.