I wonder how to filter desire lines so that only those higher than 100, for example, are shown.
See photo attached.
In the Org Exp, after your statement N=521, you can right-click in the box and select the attribute you want to filter out (e.g. HVYVOL) and then apply a condition. For example, to use the AND ( & ) command:
N=521 & HVYVOL>100
You can also use the OR function ( || ) to set the "or" command between the node and variable's condition.