Budget Charts y-axis Parameter

Hello all,

I have been use Gnucash for a years and today I tried to control my budget by creating a budget barchart to visualize my budget control progress.

I think I need to have barchart minimum bound for y-axis is set to 0 so I can understand better my budget.

minimum bound for y-axis not 0

In this picture above, the actual cost is started from Rp800,000 I want it to start from Rp0 like in this image:

minimum bound for y-axis is 0

Do you have any experience to fix it?

Thank you.