I m tryin to dynamize the scale of the bar graph but i cant seem to get it right. What I want is the user should be able to change the minimum and maximum value of the graph. So I link 2 tags to both the attributes. The problem is when i put the tags in, the bar doesnt show minimum value when i put negative values in. For instance when I enter +100 for maximum value and -100 for minimum value through a I/O field, the bar scale only shows +100 to 0. When I try not using tags, it works correctly. It even work with tags if i tag the Zero Point Value with the minimum value but now the bar starts from the minimum value instead of 0.

I need a bar graph where its scale follow the value i enter and starts at 0.

Thanks