Set layer height based on variable value (repost)

Does anyone know if it’s possible to set a layers height based on a variable value?

I’m trying to build a Sankey chart component that I won’t have to break in order to change the heights of the nodes in the chart. I’m guessing this isn’t possible, but figured I’d ask.

Screenshot attached. This is my work in progress version.

Is “345” a static placeholder value for variables that will drive the height of each of the items they’re applied to? Create the number variables and hover the height field to produce the variable icon, click that and select the corresponding variable.

That’s right. The 345 is the placeholder value for the symbol.

I’ll give that a shot today, thank you