By over whelming request - well 'CrowZera' asked - I added a manual override so you can write in any exchange you want. The request was specific to crypto so you can compare any of the exchanges (crypto or not). If the exchange does not offer the currency the script crashes.
To get the name of the exchange:
-Load the chart with the exchange you want
-Click of the three dots (...) next to the symbol name at the top left of the chart
-Choose "Symbol Info"
-You'll see the exchange name written as it needs to be there (you don't need ":" - the script adds it)
Good look 'CrowZera' - Crypto looks brutal...