Custom Dialog Window Syntax

[Spac3man]

What is the correct syntax to include a field inside of the custom dialog? 

 

This is what I tried:

 

"Are you sure you want to delete Invoice:"; Invoice::INV_Num

 

FMP keeps telling me it expects and operator so I tried:

 

 

"Are you sure you want to delete Invoice:" and Invoice::INV_Num

 

but the resulting window would just show 0

 

 

 

[David Jondreau]

To join two strings in a calculation, use the & operator.

[Spac3man]

Fantastic..... thanks