BestFit position of label chart

Hi,
I’m using chart Line and my data value is big (xxx.xxxx.xxx.xxx.xxx).
And when I use BestFit to set position of label but it was overlap (same pic):
Capture.PNG (26.7 KB)

Have best way for my issue?

Regards,

@DungLT,

Could you please share template file and source code for our testing. Also mention how MS Excel displays these labels. We will reproduce the problem and provide our feedback after analysis.