Values/Formulas

[sumcap]

I'm having trouble adding a "markup" box to a store invoice field. The
original section had "Store labor", "Store Materials" , "Store Tax" and
"Store Total". I'm currently trying to add a "markup" line that will total up
with the labor, materials and tax values. There is an error message that says
invalid control property: control source and no such field in the list. I can
send a screen shot to anyone that is willing to help.

 

[Sninkle]

Is this an unbound or bound control?

 

[sumcap]

I have no clue. I just started using this program.