Reading a schedule parameter and adding to a shared parameter in a tag

Hi All,

Im trying to read a custom shared parameter (calculated total) from a structural framing schedule and the push the results into a shared parameter that’s stored in a structural framing tag.
BP.Total Lengths varies depeninding on the family/model so i could have 10+ instances of this and it will be tagged to various families. IE Family 1/Family 2 etc will read the Total lengths associated to there particular revit schedule row.

Im new to dynamo and a bit confused on where to start.

image