Expression value for transforming dimensions


I am currently trying to scale an image in order to add a decal using the picture frame component from from eCat (decals are currently not working, since I’m getting triangles instead of rectangles).

I want the images to be a part of the component when I “Save as a component”, so
I copied and pasted the transform container that has the image into the node tree of my machine. When I change the expression value to Sx(4.8 x 3.0), it gives me the correct width. But once I add the height value after it, the value cancels out the first one.

How do I properly configure this?

There needs to be a dot (.) between each transform in the expression.