I'm trying to hide grouping in one grid from an action external to that grid, which is different from the example here:
https://paramquery.com/pro/demos/group_rowsI've uploaded a jsfiddle to demonstrate what I'm trying -- that isn't working. The upper grid has 2 columns, one is grouped. The middle grid has a toobar button labelled "Test" that calls a function "testColumns". I've tried all sorts of ways to get that to work, and need help.
https://jsfiddle.net/1mrLdwq5/1/Thanks!
-Dave