applying property control drop down to visualisations


I want to control the data making a table and chart by being able to select a single date.

To do so I have addd a drop down property control in a text area.

However now I am having difficulties in applying this property control to the visualizations. When I try to limit data (in the data properties) Iusing the expression , [DATE] = ${Date}, i get the error , "Invalid type for function call '=' ..."

How can I fix this?


(1) Answer