Sorry, that was my mistake. What posted before was wrong. The first function should be "cmp", not "raw_field". I have no idea how I did that.
It should have been:
Code:
program:
cmp(list_item(field('#gr1'),1,','),0,'','Yes','')
The alternative is:
Code:
program:
cmp(list_item(raw_field('#gr1'),1,','),0,'','Yes','')
The possible advantage of that is that the value of #gr1 doesn't go through any formatting specified for the column. Though I don't know if the decimal point will be locale specific, so it could be a comma or a dot.