Reports not displaying in Dashboard

I'm having trouble with a dashboard I'm building. I want to display either an IS or a BS on a single dashboard frame based on user's selection. I've created a list parameter with the options "Income Statement" and "Balance Sheet". However, no matter which option I select, the dashboard only displays the IS. I suspect I'm missing a step to properly link parameter selection to switch between the two reports. I don't have much experience with multi report dashboards up to now, I've only worked on single report dashboards. Could someone help point out what I am doing wrong or guide me on how to make the report dynamically switch based on the parameter. Thanks.