Adding wiggle a property that already has expression?

I have a pretty simple expression that connects a layer's X scale to a slider.

temp = thisComp.layer("Tag4").effect("Slider Control")("Slider");

[temp, value[1]]

How would I add a wiggle to this?

I tried this:

temp = thisComp.layer("Tag4").effect("Slider Control")("Slider");

wig = wiggle(1,10)

s = temp + wig

[s, value[1]]

But got an error (I guess because wiggle contains an array?)

I'd appreciate some suggestions.