At the City of Sandusky they wanted the option of “Court” to appear in the Billing Status drop-down box on the Rental Screen. Turns out you can use a script to add new options to the fixed list drop-down boxes in ZonePro. To accomplish this we used "Housing" as the Module, "Rental" as the Screen, and "Screen" as the Action.
rescreen.zp_pageframe1.page1.cmbBstatus.rowsource =;
rescreen.zp_pageframe1.page1.cmbBstatus.rowsource + ",Court"
rescreen.zp_pageframe1.page1.cmbBstatus.requery