column[] returns the value of the current row().
The default value of row() is 0. To access the value of row 1, just adjust the pointer via row()=1;
New Table( "test",
Add Rows( 1 ),
New Column( "Freq",
Character,
Set Values( {"200"} )
),
New Column( "IDynatTsense__200__65",
Set Values( [20] )
)
);
HashFreqval = Column( "Freq" );
row()=1;
IDyn = Column( "IDynatTsense__"||HashFreqval[]|| "__65" );