Hi @erik_lorentzen and welcome to the KNIME Forum.
As a quick and easy solution you can simply put the filters in a component and remove the update button, as it will no longer be useful.
This way you will have an updated plot every time you modify the second filter. If you modify the first one, you will also have to modify the second one if you want the graph to be displayed.
I share the workflow in case it helps.
Reexecute_halfway_in_component_view_updated.knwf (89.4 KB)
Thanks also to @HansS for the suggestions.
Let me know if this was useful.