Issue with Easy SPC chart

I have data 

Headcount reportdate

1000          2022-01-01

2000          2022-02-01

3000          2022-03-01

4000          2022-04-01

To represent the Easy SPC chart, I dragged headcount data into the measure section, and in the dates section, I used the report date column. then click on Run chart option, I am able to see the data 

When i am representing count type of data chart is showing correctly 

but, when i have data 

perc       reportdate

0.002          2022-01-01

0.53           2022-02-01

0.62          2022-03-01

0.63          2022-04-01

This decimal values is not showing as it is in the tooltip , it is showing for all the data points as 1 , i am not able to figure where to fix that