Check mediawiki version to new one published

[mixmegapol]

Hello all

I implemented a check on my Zabbix server for getting the newest mediawiki LTS version; that works fine and give me 1.27.3 .
I implented a check on my wiki server (get content of a file) where I have written manually '1.27.3' into it. That check works too.
Both items are of 'text'-type.

However, my trigger doesn't work:

{zabbix.prod.abc.de:mediawiki.lts_version_check.la st()}<>{wiki.prod.abc.de:vfs.file.contents["/var/www/html/.mwversion"].last()}

and gives error:

Cannot evaluate expression: expected numeric token at "1.27.3)<>(1.27.3)".

No, there is no bracket between " and 1.27.3" ..

QUESTION:
How can I compare these two strings?

Kind regards
Daniel