How to prevent from this message in chart preview: "A chart element with the name ' ' already exists in the series collection"?

[Amranullah]

I have the X-axis and also legends in my chart which are linked whit text-boxes. every text-box is under randomize value and name means don't have special or static name of number it is depend to user inserted data. Some time when there is same name or numbers in two or more then tow text-boxes after debugging VB form the chart show message (A chart element with the name ' ' already exists in the series collection) the ting is i have to include those text-boxes which have same name, means i cannot ignore them because every text-box data is impotent. So please how can i prevent this message by using code. thanks

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