Sorry, Maybe I have not expressed myself well
I used transform ( ) as you sugested and:

test22 = TRANSFORM("1133412927", [@R 999-9999-9999])

test22 results 113-341-2927

and not 11-3341-2927 as I need

Moises





lcNumber = [1133412927]
? TRANSFORM(lcNumber, [@R 999-9999-9999])
lcNumber = [01133412927]
? TRANSFORM(lcNumber, [@R 999-9999-9999])