Date ULONG and DATE

[edc000]

Hi ALL!
I have an app with a table that have a record FECHAINGRESO as ULONG. In a procces i need verify that this FECHAINGRESO it's in a range F1 and F2 declared as DATE
I use:
INSTRING(FECHAINGRESO,FE1,FE2) but Don't work
INSTRING(format(FECHAINGRESO,@D6),FE1,FE2) ¿ Don't work too?
IF FECHAINGRESO>=F1 AND FECHAINGRESO<=F2 AAAhh Don't work!!
AAHHGGG Nothing Works?!! Why??
Eduardo
Regards!

 

[edc000]

Uuuuuuuuuuuuuuffff!

INSTRING(FECHAINGRESO,deformat(FE1),deformat(FE2)) WOKS!!!

Thanks all and sorry for the fail post!!