Board Thread:Support Requests - Getting Technical/@comment-10637-20151203132546

PAGESINCATEGORY is a great tool, but I'm wondering if there's a way generate a number from multiple categories.

For example, if PAGESINCATEGORY:Red generates 313, PAGESINCATEGORY:Blue generates 671, and PAGESINCATEGORY:Yellow generates 507 (where the numbers each represent how many items are in that category), I would like to figure out how to automatically display the sum of all three.

Does anyone know how to do that, either with a template or a string of magic words, or could point me in the right direction? 