Create UDF screen field in Batch tab

Hello, I created a column called Analytical Leadtime (OITM.U_LeadTimeA), I wanted to put this numeric field in the batch tab, how can I do that?

And a title before the field.

I got the title, it was difficult, but the field displays the message "(**) wrong Column-Id U_LeadTimeA. This column is not existing inside current datawindow."

I using

windowevent postopen
    etab=addnewobject=batchnum=classeTituloGQ=text=Garantia e Controle de Qualidade=83=336=840=60
    etab=addnewobject=batchnum=class_b=column=U_LeadTimeA=nextlinefrom=class_f
end event

Best Regards

Fabio

SAP 9.3 PL14 / BEAS 2020.01 / SQL SERVER