[TYPO3-english] Call ViewHelper from outside Fluid template

[Bernhard Schenkenfelder]

In my general page setup, I define the template as per: page.10.template.file = fileadmin/template.html

Is there a way to call a ViewHelper in this template? The following snippet in the above template

{namespace xyz=PATH\TO\MY\ViewHelpers}
<xyz:myhelper argument="abc" />

does not work, it is surfaced as is.

Any ideas?

Thank you,
Bernhard