Looping through cell in table

Hi all!

I have been digging but can't find my answer.  I have a table that you can add rows to.  In the same cell in each row I have to validate if the number in the field starts with a 4 or 5 ( the number is a total of 6 digits long).  I have java script that validates the 4 or 5.  but I need to loop through all the rows for that cell. Right now just validates on the first row.

Help!

Thank you!

Jodi

var Grant = Main.PreApproved.Table1.Row1.Fund.rawValue

var GrantFund = Grant.charAt(0)

if  (GrantFund == 4 || GrantFund == 5).......