v2.3: No Add/Subtract but Multiply/Division work OK. Bug or "feature"?

[FlailAway]

I like the simplicity of this WB over the Spreadsheet, thanks.

Is there reason for thisr?

• I have defined a Length dd.ddBarLength
• I want to use it and then add a little to it.
• I click the "Expression" button,
• I begin with "dd.ddBarLength + 3"
• I get an error "unit mismatch in property operator dd.ddBarLength + 3"

I have made a work around by creating a dd.ddOneMM with a value of 1. and "dd.ddBarLength + (dd.ddOneMM * 3)" works OK.

Multiplication and Division work OK with this line

• I begin with "dd.ddBarLength * 3" and
• I begin with "dd.ddBarLength / 3" Both of those work OK, so I do not understand why Add/Subtract do not..

[mwganson]

Try dd.ddBarLength + 3mm