I have currency Toggle Local, USD,GBP.
If user selects Local textbox Sales value should be displayed with out $ and the expression for Sales Value := num(sum({<$($1)>}SLS_DLRS*$(vCurrency)), '$#,##0') Ex: 80642
If user selects USD Sales value should be displayed $ in front of num expression. Ex:$80642
If user selects GBP Sales value should be displayed in front of € num expression. -Ex: €80642
Local: For local text box just set two variables.
VCurrency=1
vCurrency_MSRP=LOCAL_MULT
For USD text box
vCurrency= USD_MULT
vCurrency_MSRP =1