Number format in thousands showing blank for positive numbers <500

Hi experts

I have a number format that shows thousands of dollars as follows: #,###, ;[Red](#,###,);-

It works great except for numbers greater than 0 and less than 500. In that case it shows a blank cell. Is there a way to write the format to keep the numbers as they currently are, ie. no $ symbol, commas to separate the thousands, etc. but to show either "-" or "0" if the numbers are in the 0-500 range?

Have solved my own problem: #,##0, ;[Red](#,##0,);-

Kind of obvious now that I think about it.