I can get it to work with one worksheet and one graph layer by using %Z=header.text$ in the script window of the worksheet and then putting %Z as the text in the lable on the graph layer(and enabling the Link to Variables in the Lable Control dialog window).

However, when I try to add another worksheet and graph layer, say by putting $Y=header.text$ in the script window of the second worksheet and %Y as the text in the lable of the second graph layer(and enabling the Link to Variables in the Lable control dialog window) it doesn't work.

It seems Z is the only variable I can assign the header.text to.

In worksheet script box #1:
header1.text$=%Z

In worksheet script box #2:
header2.text$=%Z

In "header1" text label in graph layer 1:
%Z

In "header2" text label in graph layer 2:
%Z

First I import a file to worksheet #1 and the correct label gets put in header1 (and it also gets put in header2)

Then I import a file to worksheet #2 and the correct label gets put in header2, but header1 also gets changed.

I don't think I know what you mean by "make a one time assignment."

Do I have the right commands in the right places and what should I do different?

I really appretiate the help!