Workforce Compensation: Creating an employee change statement with a dynamic pie chart

Summary

Looking to use the Employee Change Statement, but have a pie chart for each employee that shows % for various components

Content

Hello -

We use the employee change statement to generate the letter and statements for our various comp plans.  When we're doing LTI planning, we'd like to show the employees the % of their total compensation (excluding benefits) for each component (Merit, STI and LTI).  I can place a static pie chart image in the template and have tags with the actual %, but I don't know how to get the pie chart to adjust for each employee, based on those %.  Has anyone done this using the Employee Change Statement?