Hi Phoenix   The basic rule is "allways format as the type of variable, that you need to deal with".  IE: If you need to add or subtract days from a date; convert the date to a number (using the operator "TreatAs"), then do the maths, and wrap the entire formula in a new "TreatAs" to convert back to date-format.   Same thing with numeric values: Use "Format" and "Best" as operator to convert from numeric to string. Concatenate the two and you are done!   I've added a matrix showing which operators to use in VA 7.3, if you wish to convert between variable types.   Best regards   Jais     ... View more