OK, so I have 350 DDI's.  If someone in the DDI range calls out, I want the DDI to be shown..  So if I'm 2280 I want to display 01345 58'2280' or I'm 2176 I want to display 01345 58'2176'.  At the moment this displays as 'Unknown Number'..  
I can, using the forms you recommended change 2280 and display 01345 58'2176' because that is what I have programmed.  BUT if I try to program 2280 to show 01345 58'2280' is shows 'Unknown Number'
I hope this is a little clearer, and I'm not asking a stupid question.