Evaluate Expression Left

[invoso.com]

HI,

 

I try to use evaluate expression but I found one problem

 

We use: LEFT($RV_DNIS,4) and want to recognize prefix (alphanumeric)

 

Using LEFT(221602937,4) we receive right result: 2216

But using for LEFT (CD17221602937,4) we receive empty result.

 

Can You help me WHY?

[SupportTeam]

Please use quote characters around the input string. ie:

 

LEFT("CD17221602937",4)

 

also a good idea to have the quotes around any result variable expressions that should be treated as strings. eg:

 

LEFT("$RV_DNIS",4)