Tracking Changes in MRR Over Time in Mixpanel Reports

Hi Mixpanel Team, I’m trying to create a weekly report to track changes in our MRR over time. I’m using a custom property called sub_mrr, which is set on the Account profile. However, the result shows the same value for every week, even though I expect MRR to change. I suspect this might be because sub_mrr is a static profile property. Is there a way to visualize how MRR changes over time in Mixpanel using this setup, or do I need to track MRR changes as a custom event instead?