Hi Sean,

Am Sat, 2 Feb 2013 03:15:12 -0800 (PST) schrieb :

1) If value in K10 = "C/D", then (2) below does not apply
2) A value is already entered firstly in J10
3) The value being entered in H10 has a max of 2 decimal places, eg user can enter 1000 or 1000.12, but not 1000.123

try:
=AND(OR(LEN(J10)0,K10="C/D"),LEN(H10)<=LEN(INT(H10))+3)


Regards
Claus Busch
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Win XP PRof SP2 / Vista Ultimate SP2
Office 2003 SP2 /2007 Ultimate SP2