How to if statement in field list

i have a table name purchase order , if that order is inside the domestic i need " cgst, sgst " column value only in list page of purchase order
when create order if that purchase order is outside when i need the column “igst " only display
how to get this in list page
i have created add page columns " igst” , sgst , cgst , columns
i need condition only list page also print page

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