You can use https://marketplace.mendix.com/link/component/111497 File dropper widget . Make sure you have one to many relationship. If only one generalized entity can handle only one image.
Create an one entity give relation between them as one to many to load multiple images.
refer the documentation of File Dropper for more information.
Hope this helps!
HI Madhura ,
Please find the below image and set your associations like this
Create association below like this
1 CPIP[ Your main object ] --- * Multiple Doc Container [ Support object ] and 1 Doc Container – * Multiple Document [image object] .
In this you can able to add multiple images