Thanks you both for answer.
I think that Brenden's solution will work. I'll try it tomorrow - here is late night.
I used this manual, but there is no trasformation.
Below are some images of settings.
PageType
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Form. Multiple images of one product.
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Part of transformation
<div class="product-img-area flex-container vertical-center">
<img src="<%# GetAttachmentUrl(Eval("PoolImage"), Eval("NodeAliasPath")) %>" alt="SwingPools">
</div>
Result. Multiple product with (expected result) first image show.
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