We will improve the XFunction to support search column label row. For now, if you want to search column longname and replace "<I>" by "current", you have to loop over all columns, see script below:
for (int i = 1; i <= wks.ncols; i++)
{
if (wcol(i)[L]$ == "<I>")
wcol(i)[L]$ = "current";
}
James