So you want the UI only formulas to update when you change the target retention %? Is Targer Retention % a Ui only field or a database field? My guess is that you would need to save the changes to the model to get the UI only to update based on changes to database fields. You could do this with a model action that saves the model each time you update the target retention % field.

Hi There Skuidward, The Target Retention % field is currently an UI-only field but it seems a table made with an aggregate model can only be Read Only. Do you think in order for this to work, I will need to make a database field that will store the variable %  which upon editing and saving would update the aggregate model table?

Ok… this is a tricky one… So you need the first two fields from the agg model, but you need to be able to update fields on the object. You could try making a regular model on the object in addition to the agg model. Then you could use the model lookup function of UI only formula fields to pull in the two agg model fields Into the regular model. You could have a UI only formula to display the original renewal book and the book won fields, then additional UI only formula fields to do the math based on those fields.

Hey this worked out perfectly! I simply had an agg model to get the two initial values I needed and then created a separate model which pulled in those two aggregate values along with a few UI-Only fields to produce the calculations and threw those in a table and…voilà! We have our table making on-the-fly calculations! Thanks for the help. 

Great!