notepad++ - user-defined language - comments including spaces? (spaces as part of keywords)

Clash Royale CLAN TAG#URR8PPPnotepad++ - user-defined language - comments including spaces? (spaces as part of keywords)
i'm making a user-defined langauge in notepad++ and I want to make a multiline comment highlighting where the comment begins and ends with < ' > . As you can see there are spaces before and after the sign. This means that if this sign does not have spaces it's not the beginning nor the ending of a comment, but I wonder is it possible in notepad++?
Same thing goes for any other highlighting - spaces as part of the keyword.
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