[TYPO3-mvc] Fluid img Question

[S.Korth]

Hey all,

i thought i could render images with for example:

<f:for each="{bilder}" as="bild">

    <f:image src="fileadmin/referenzen/{bild}" alt="{projekt.name}" 
height="400" minHeight="400" maxHeight="400" />

</f:for>

My problem is, the images are still the same small images without any 
change in height scaling. What iam doing wrong ?