Access table data outside of the table

I have an outside form that updates my table, think of this as an interactive report. I'm not using actions to update the table but I am using applyFiltersToTableQuery which when my form updates works perfectly with the table and updates it for me. I have some cards that I want to display some totals gathered from the table and as the filters are updates so should the totals. I tried to set a property inside of applyFiltersToTableQuery but it results in a black modal with an Nginx 500 error.