Question with Functions

Version 4 V4 Question
1

Dear @JohnS or @emre, I am trying to print this out:

R$[=FN({ORDER TAG PRICE} * 2)]

but I get nothing.

what am I doing wrong?

thanks

g.

2

OK @gerlandog I have tried this out, if you want to print just on the receipt this worked for me
[=TN({ORDER TAG PRICE})*2]