Converts a string into a group and places it into a group number. Any existing values in the group are cleared before the new values are inserted. The group string is a series of numbers separated by " , " to list individual values or " .. " to specify a range of values.
The group handle, returned from the GrpOpen() function. The group handle identifies the table where all data on the associated group is stored.
The string to convert.
0 (zero) if successful, otherwise an error is returned.
! Set group to 1 ... 10 and 20, 30 and 40.