Help with jscript syntax for writing simple cookie

After consulting several recommended tutorials on cookies, I came up with the following line for putting the value of the variable shipWeight into a simple cookie, for debugging purposes.

document.cookie = "shipWeightCookie="+shipWeight;

Unfortunately, it "breaks" the code.  The function runs OK (although without the desired result) when this line is commented out.

Could someone tell me what is wrong with this syntax?
The examples in tutorials generally assume you want to write an explicit string value to the cookie rather than the value of a variable.
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netsmithcentralConnect With a Mentor Author Commented:
Once I determined that the function would return a number, if I replaced the designed return value with that number,
I was able to debug the jscript "runat server" script by replacing the designed Return value of the function with different variable values from within the function.

This is the kind of thing that is obvious after it is pointed out.
netsmithcentralAuthor Commented:
I suspect the problem may be

<script language="JScript" type="text/jscript" runat="server">

just above the function.

The function must run server side.  Does this preclude writing a cookie?

How else can I get variable data out of the function for debugging purposes?
I could find no information on writing session variables directly out of jscript.  Most say can't be done because it runs client side.
However, this function explicitly runs server side.
netsmithcentralAuthor Commented:
Question should have been reframed as query about debugging techniques to use with jscript runat server function.
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