Refreshing hiLoadIconData() icons

When I use hiLoadIconData() or hiLoadIconFile() to load an image for
my form, the image is loaded into the memory. Without restarting
Cadence, I am not able to load the same file to get an updated image,
it will keep giving me the old image that is loaded earlier.

Is there a way to purge those loaded images from the memory just so I
can reload the same image file using hiLoadIconData() or hiLoadIconFile
() and get the latest image? Thanks!
.

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