Beas Script - Created user fields format issue

I have created two user fields in a beas script screen. The first field is a text box, and the second field is a dropdown menu.

However, the second field does not seem to work properly, and it appears to be linked to the first field, rather than functioning independently. Could you advise on where the issue in the script might be?

The script: 

global function form_loaded

 

dw_1.create=column=name=geann_udf_qty1,x=713,y=700,width=500,height=56,
dw_1.create=text=name=lb_geann_udf_qty1,text=UDF_QTY,x=30,y=700,width=1600

dw_1.create=column=name=geann_udf8,tab=80,x=1858,y=700,width=600,height=56

dw_1.create=text=x=1340,y=700,width=600,name=lb_geann_udf8,text=UDF_WHSitem.geann_udf8.dropdown.select T0."WhsCode",T0."WhsName" FROM OWHS T0 ORDER BY 1

 

end global

 

The "UDF_WHS" column cannot be written back.

 

And the user field "UDF_QTY" cannot input value, when key in UDF_WHS text, the  "UDF_QTY" is linked.