p5Gui and noLoop()

I’m experimenting with p5Gui library.
I’m trying to understand this example: p5.gui/sketch.js at master · bitcraftlab/p5.gui · GitHub

I would like to create a drop down menu for experimenting with blend modes and update my canvas in realtime.

I can display the gui just fine and select my different blend modes but as I use noLoop() each time I pick a new value for my blendmode it doesn’t update its value unless I comment the noLoop().

Is there a way to update a variable value each time I use the GUI while not having noLoop() commented?