Change to "?capitalize" a SUP table column data

Hi team,

Is there a way to capitalize the “QUARTO” column of my SUP?
This column is filtered with the “NOME_QUARTO” column (already capitalized by default) and in some situations the data entry for the “QUARTO” column arrives fully capitalized.
Example: filter QUARTO --> CAMA CASAL = Cama Casal --> NOME_QUARTO

I tried using ?capitalize in the <#assign> directly but to no avail.
I also tried inserting ${SUP_RESERVA_ABANDONADA.QUARTO?capitalize} in the campaign's Data Sources in the corresponding column, but to no avail either.

Attached is the file of my data sup print that I am using.