Tag element with certain parameter

[gerian]

Hey,
i need to tag only electrical fixtures that has “electricalDesignation” parameter. I don’t know what is wrong. I´m new in dynamo

[sovitek]

Hi @gerian and welcome to the community…try filter out as here…

[gerian]

Hey, I applied the filter, but I got error on tag.by element node

thanks a lot for your help

[sovitek]

You need a filterbyboolmask after your parameter exist …try as here

or

[pyXam]

You are feeding your true / false list into the element input of the tag node instead of using it to filter your element list.

Fix as shown below