[TYPO3-english] Multiple selectbox export with powermail

[Sergio]

Hi list,

I want to export my powermail forms sent by the user to an Excel. I've got
the next configuration to export where uid43 is a multiple selectbox:

tx_powermail_mod1.export {
  number = Id
  uid43_1 = Interest 1
  uid43_2 = Interest 2
  uid43_3 = Interest 3
  date = Date
}

but I would like to show uid43_1, uid43_2 and uid43_3 in the same column on
Excel, separated by ";". Is this possible? I saw that's not Typoscript, but
I would like to know if there's a way to solve this.

Any help would be appreciated,
Sergio