I can not activate a cell in a grid. I am searching a table that the grid is using. I am returning the column and the row to a variable. I am then executing the following code.

THISFORM.comgrid.SETFOCUS()

DO CASE
CASE 'COM' $ UPPER(THISFORM.calias)
THISFORM.comgrid.ACTIVATECELL(THISFORM.nactiverow, THISFORM.nactivecolumn)

CASE 'PAY' $ UPPER(THISFORM.calias)
THISFORM.paygrid.ACTIVATECELL(THISFORM.nactiverow, THISFORM.nactivecolumn)

CASE 'MED' $ UPPER(THISFORM.calias) OR 'HOS' $ UPPER(THISFORM.calias)
THISFORM.medgrid.ACTIVATECELL(THISFORM.nactiverow, THISFORM.nactivecolumn)

CASE 'SVC' $ UPPER(THISFORM.calias)
THISFORM.svcgrid.ACTIVATECELL(THISFORM.nactiverow, THISFORM.nactivecolumn)

CASE 'SV2' $ UPPER(THISFORM.calias)
THISFORM.sv2grid.ACTIVATECELL(THISFORM.nactiverow, THISFORM.nactivecolumn)

ENDCASE

Why doesn't the Cell ever activate?

Thanks,
Christian Peterson