[TYPO3-english] Debugging ToolbarItemInterface

[Matt Clough]

Hi All,

I am trying to create a new toolbar item in the backend of Typo3 to appear next to user toolbar at the top of the screen. This toolbar implements TYPO3\CMS\Backend\Toolbar\ToolbarItemInterface. I can get it to display some simple content, but i am unable to debug any logic i put into it. I get no output in any of the function with \TYPO3\CMS\Extbase\Utility\DebuggerUtility::var_dump(); 

I am using the latest 8.7 release

Any help would be most appreciated.

Thanks

Matt