HELP : Add 2 lists values by value parameter

[Yna_Db]

You could need a Dictionary.ByKeysValues from spring nodes for this.See here how it works:

Place detail family as symbol for fire protection values of doors

The Dictionary.ByKeysValues node simply maps the list of values (=keys) with the list of symbols types (in List.Create), and returns as a result a list of symbols instances accordingly to the parameter values from the existing elements (=searchKeys). The parameters syntax in code blocks depends on the parameter type. [image] When parameters change, to re-run the script should be enough, there’s apparently no need to delete anything (at least that’s what I see).