How do I resize images in the collage?

Stefania Member Posts: 4
edited October 2023 in Developer APIs

I try to create a collage and want for every image of the collage to resize only height (so width will be automatically resized). It seems collage does not have an asset-default height. How do I resize images so that for all images the height will be the same? I also tried to upload first, but even when I upload and transform the image, I cannot insert the transformed image into the collage