Aggregated running product or product of list measure

[Andre_Forte_Sep]

What I'm facing is: Every hours we take a value from our systems and store it on a dimension called results. I need to calculate a running_product of this values aggregated on a timeframe defined by the user. (value_1 * value_2 * value_3.....value_n)
I thought about creating a dynamic dimension and a parameter where user can select what timeframe he wants and than create a list measure using the results dimension so it would aggregate every single result on for a week (month, year or w/e was selected) and than create a table calculation with the product() function but the product() won't work since the list measure store values as strings.
Anybody ever had to deal with something similar?

This is how my data looks like

This is how the list measure looks like. I would like to apply a product() on it