I have a grid based on table1 with 2 columns. Column controlsource is table1.cd_type Column2 the controlsource is table2.ds_type2 when table1.cd_type = 1 or is table3.ds_type3 when table1.cd_type = 2

table1
cd_type N(5)

table2
cd_type N(5)
ds_type2 C(35)

table3
cd_type N(5)
ds_type3 C(35)

Thank to you all