How to format decimals using a format pattern on a report

[cliff_clayman]

I have a few decimal fields from a SQL table that I need to format in the report.  The user does not want to see the decimals where the value is a round number.  For example, currently a value displays as 100.00 and the user wants to see 100.  However, if the value is 123.45, then I need it to display as 123.45.  Can I handle this on the report?  I  know I can use the Number Format Settings in the Document Properties, but I am not sure what the format syntax would be.

[Peter_Cammaert]

If you use Expression Default from the Numbers tab, you should get integers when no decimals are to be shown, and a floating point value in all other cases.

[cliff_clayman]

These aren't expressions.  They are just dimensions I pulled onto a straight table.

[Peter_Cammaert · Accepted solution]

Then replace them in your Chart Properties with a Calculated Dimension and enter an expression like:

=num([Your Dimension Field])