[TYPO3-ttnews] Add additional params to news single link

[aaron kenez]

I have the below link which is generated from the list view in tt_news
http://www.example.com/index.php?id=1&tx_ttnews[tt_news]=2&tx_ttnews[backPid]=3&cHash=58b6f35fc6

I would like the link to be

http://www.example.com/index.php?id=1&tx_ttnews[tt_news]=2&tx_ttnews[backPid]=3&cHash=58b6f35fc6&myparam=1

I have looked at numerous examples but can't seem to find an example of
this.
I have tried adding in additionalParams see below but am not able to get it
working?

plugin.tt_news {
    typolink {
        additionalParams.insertData=1
        additionalParams=&myparam=1
    }
}

Where am I going wrong here?