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Everyone knows the doubling system in the casino for roulette here is not something new to invent is not necessary. the script works the same way, that is, if you lose, it doubles the bet and so on until you win, as soon as you win the bet automatically becomes the minimum.
Install the Tampermonkey add-on for your browser and copy the source code into a new script.
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and activate Tampermonkey using a script.