how to limit the maximum size of the inserted image in the bounding box or print box.

I need advice on how to achieve (if it is possible) to limit the maximum size of the inserted image per product to a limited size.

example:

the image to be inserted by the customer is 600x600px/300dpi

set bounding box/print size: 420x285 mm

the bounding area size in FPD is set to 327x229 px

bounding box - mode: limit modification

and we need to ensure that the customer can insert an image/design into the defined area in a maximum size of 210x285 mm or after conversion to 163x229 px. And so that the inserted image can be resized, but only up to the size I wrote. And could save the image to any place within the 420x285mm / 327x229px definition.

simply put, to insert an image, for example, in the maximum size of A7 in the space for printing in the size of A3.

Individual Product Settings:

bounding box - mode: limit modification

settings FPD: element properties - images:

bounding box:

element as bounding box: yes

mode: limit modification

scale mode: fit