how use set expression with a String field

[pascos88]

Hello,

how can I write this expression ?

=maxstring({<CampaignID = {$(v_Last_Year)}>}MissingCompanyName)

MissingCompanyName is a string, maybe the aggregation is wrong.. Coould I use something else in stead of maxstring?

Thabks for any help

[pascos88 · Accepted solution]

HI,

now it work just with this...

= maxstring({<CampaignID={$(v_Last_Year)}>} MissingCOmpanyName)

I don't know why didn't works before.. Thanjs for your time