because that one line is so friggin' long and without spaces, browsers don't break these 'single word's :)

i suppose wherever you have this, mzscript isn't picking it up. recheck config about where the scripts may be read: either as part
of step.rc, or in a varfile.

for what's here, you don't even need mzscript, if this is all you're using it for; you could do without it.
just define an evar with that big line without spaces there, and !execute $WhoaNelly$