Hi @Epyns1 , the node “Dimension.setvaluebelow” expects a dimension and not a dimension segment which is the reason why it doesn’t work.
I didn’t find a node that could readily do what you want, but it could be achieved with a simple Python node:

Hi @Epyns1 , the node “Dimension.setvaluebelow” expects a dimension and not a dimension segment which is the reason why it doesn’t work.
I didn’t find a node that could readily do what you want, but it could be achieved with a simple Python node: