Correct, create a promoted table with few fake rows.
data dummy_va(promote=yes);
do number=1 to 25;
num_char=put(number, 3.);
output;
end;
run;
Then load this table to the report.
Next select the table and create a customized group.
Use this customized group, here sel lattice, in an object, here button bar.
Assign a parameter to it, here sel lattice parameter.
Then use the parameter i.e. in an if-then statement to return the desired category variable used for the lattice role.
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