I encountered a problem with the drawing (solved)

I'm drawing a graph where the value of a bar line is that it can be changed by the policy interaction in the run, but it doesn't show up on the graph as long as the value is changed by the policy interaction. I tried to do the same thing with the chart function and the bar library. Changing the previous value to -1 is normal.Changes to -1.1 are not displayed

Solved The reason is that the value of the policy interaction input is a string that can be converted to a number.