Mac Automator: combine images in PDF and resize

I not too familiar with Automator for Mac. I am trying to create a quick action to combine several images in a single PDF file and reduce its size with a quartz filter. The actions does indeed create the pdf but it does not reduce its file size. This is what I did: If I create two separate quick actions (one to create the pdf from images and another one to reduce the size of a pdf file) and apply them sequentially they work correctly. But not combined into a single action. What am I doing wrong?