Charts with Dynamic Data from Text Input

I want to add a chart to my app that changes its data based on a text input. I’ve created the chart template and want to override the datasets. However, when I use the “join” block for “data 1” with the text input’s text, it gives me an error.
I followed the instructions in the Thunkable Docs for charting up until this point.
In my case I want to take the data from an input table (Table 1) and my Chart 1 to display data1=text_input_category 11
data2=(data 1)x (1+ text input category 13)/100
Can someone please tell me if this is possible and how to do it?

Here is my app: Thunkable

Thank you in advance.