Polish characters - replacement

0

Hi,
I have three fields:

Name - text
lastname - text
domain - choice field
And one technical field to which an action is assigned:

concat[name][.][lastname][@][domain]

The action works correctly but takes Polish characters into account.
Is it possible, and how, to remove Polish characters in the technical field, i.e., replace "ą" with "a," and so on?