I'm trying to create a web map that highlights chemistry sampling data for my organization. Each station point has several "chemistry parameters" that needs to be displayed in a "bar chart" format.

The issue I'm running into is that the Arcade expression I used in ArcGIS Pro where I created this map is not being honored once it's shared as a web map.

Is there a process / workflow to include an Arcade expression for modifying symbology? 

I just want to understand how to best approach this.

Attached is the data table I'm working with, a screenshot of my webmap, and a screenshot of the ArcGIS Pro symbology that I would like to re-create for the web map. The Arcade expression that worked on ArcGIS Pro was this (using the symbol property connections)...
        
    var offsets = {
            "Chlorinated Hydrocarbons": 0,
            "Inorganics": -10,
            "PAH": -20,
            "PCB": -30,
            "PBDE": -40,
            "Pyrethroid": -50,
            // and so on
        }
        return offsets[$feature.parameter]

[![enter image description here][1]][1]

[![enter image description here][2]][2]


  [1]: https://i.sstatic.net/k5mRA.jpg
  [2]: https://i.sstatic.net/8HsdQ.png