Windows powershell not finding "gradlew"

So I want to mod Minecraft java with Minecraft Forge on net beans and I need to shift right-click on the forge folder and open powershell there, after doing that I have to type gradlew setupDecompWorkspace --refresh-dependencies to configure forge but I always get the error gradlew : The term 'gradlew' is not recognized as the name of a cmdlet, function, script file, or operable program and can’t move on from there. Can I get some help please, thanks :slight_smile: