thanks for your reply. It work correctly after remove eval(). But why it doesn't work if I remove max()? At first, I try to use if (_NPIC=2) but it doesn't work.
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Here is another graph I need to draw. it is more complex. I created it by SGPANEL. but at last page, there is a blank cell which need be removed. and client ask to add x-axis if it is possible. So I try to resolve it by GTL.
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