When using a graphical web page and/or site editing application to create web pages for use by 4D Server, be careful that extra characters are not added to your HTML comment tag calls to 4DACTION, 4DMETHOD, 4DVAR and 4DCGI.
For example, an extra space added before the final "-->" of a 4DVAR tag will prevent it from mapping to the proper 4D variable.

<!--4DVAR myVariable--> will work if 'myVariable' is a valid 4D process variable

but

<!--4DVAR myVariable --> will not work (note the extra space)