>>>A numeric textbox will always show a - (minus sign) before a negative number. However, I would like to explicitly show a + (plus sign) when the number is positive, and neither when it is zero.
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>>Check TRANSFORM() it will give you (CR) or (DB) for Credit or Debit depending.
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>Thanks for the idea, but it's not a currency field, it's a numeric variance, so CR and DB wouldn't work in this case.

TRANSFORM() Can be a numeric field it does not need to be currency.