[TYPO3-english] Weird problem!! :S (Hard to describe in subject)

[Enrique Moreno Tent]

So heres the weird problem of the day! This code seems to work:

    IMAGEPREVIEW = TEXT
    IMAGEPREVIEW.value = hello

But this one doesnt:

    IMAGEPREVIEW = COA
    IMAGEPREVIEW.10 = TEXT
    IMAGEPREVIEW.10.value = helloo

How is this even possible? There must be something fishy going on because
this morning I also tried to make a super basic User Defined function with a
simple Hello World and I couldnt make it run... What could possibly be the
cause??