Hi,
I am not sure if I am doing something wrong, but I tried using Filter Columns & Filter String parameters on a lister and couldn’t get it to do any filtering. Therefore I thought I might let you know it may be broken.
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Oh, my bad, sorry - I have just realized there are callbacks which need to be used for sorting and filtering 
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You can use the pars, but the filter columns are by column number, not name! Try that. Note: This is an old and rarely used feature… looking at it now, doing this by number might have been a poor choice.
Sort columns work by number as well, btw.
Ahaa, thanks I haven’t thought of that. I have started to dig into callbacks but wasn’t successful there. Nevertheless parameters will be easier choice for sure. Thanks