Calculation condition unfulfilled -Default value for a Chart/Graph

[#1]

Hi,

I have a chart with 'Calculation condition', i would like to put default values for my chart, so when the 'Calculation condition' is not good, then chart display last good values which respect 'Calculation condition'. so Chart will never display the message 'Calculation condition unfulfilled'.

or if the 'Calculation condition' is not good,, i display a message box a the chart stay with last good values.

It's possible?

Thanks