How to reuse LET/SET variables to (re)calculate on the backend?

[mrichman]

Hi Community! 

Is it possible to reuse LET/SET variables on the backend to (re)calculate and use the results again as new LET/SET variables? 

Example: 

LET  vVariable1 = 1+1  ;
LET vVariable2 = 3+3; 

LET vTotal = $(vVariable1) + $(vVariable2)  

or 

LET vTotal = vVariable1 + vVariable2

or 

LET vTotal = $(vVariable1 + vVariable2)

I have tried the 3 options and have expected to get 8, however I'm getting an error on the frontend. 

Could someone please help? Thanks in advance! 

[NZFei]

What is the error?

[jonathandienst]

These statements are all legal, except the last. Did you include semi-colons at the end of

LET vTotal = $(vVariable1) + $(vVariable2);
LET vTotal = vVariable1 + vVariable2;

I prefer the latter myself as the expansion is not necessary here.

[mrichman]

Thanks for the reply. hmm wierd, I have tried both but still getting null as error even though my data has values. I'll check it further.

[mrichman]

I'm getting null even though my values are filled 😞

[NZFei]

Working for me: