question

Yes, I would reference the treenodes when getting the Class Statistics and Current Product ID. In the object's tree, you can right-click the objectinfo node, or productid and objectstats nodes (in variables) and select Explore > As Table. You can then reference these tables in the Dashboard. In the Dashboard library under Model Input, select Table. Click on your new table and in the properties, select the eyedropper next to Link, then sample your previously created objectinfo, productid, etc. table.

You can repeat this same process using a Dynamic Text dashboard item if you want to get a single value, like the Current Product ID (as demonstrated in my attached example model).

You can also use the getvarnode() command to access the variables of your fluid object, in this manner:

treenode obj = Model.find("FluidMixer1");
return getvarnode(obj, "objectstats").subnodes[3].value; //returns FluidMixer1 Utilization

Here is an attached example model demonstrating these concepts. Hope it helps.

FluidStatsDemo.fsm