[TYPO3-commerce] Adding fields like purchase_price, tstamp etc.

[Brian Bendtsen]

Hi

I'm using commerce version 0.12.4

I would like to display the purchase price.

A comment in the typoscript says this "// feel free to add every other 
field from tx_commerce_article_prices"

so I typed in

plugin.tx_commerce_pi1.singleView.article_prices.fields.purchase_price < 
lib.tx_commerce.stdField

and then this marker to the singleview: ###ARTICLE_PURCHASE_PRICE### - 
but it is not substituted.

What am I doing wrong?

/BB