@bendurso yes you're right, if I add a button, it works:
HiseSnippet 1210.3oc6V0saaaCElxwJn1aqaAXO.Dd23NjDXY6j13fg5Dm3Mike7pSKJvvPAsDkEQnHEjnahaQw5ixdF1ivdR1ivteWjcnjrkTsSWBv5cSAHl776GOmCO7LLTZSihjgHipWLKfhL9byQyDJuddDl.M3HjwCMOkDong3DRGNKfDEQcPFFq88ZBFUJih+9qmdHgSD1zLRHzKjLa5ILelJi5vt+Hiy6SbnWv7yIc6tCrkhdRtbJfm0LafBH1WRlPOinEqjI5GHQdHiu0bmlsra67XmlM2YucsI6R2yk35Z0xoc6cexdVs1iz9I6RarCxX8icXJY3HEQQiPFkOT5Lajm7JQhCdAKhMlS0arPi.OmPtuj6nOhZpnddLtyv4ApHDXkgYgs0RBaes4oLG1B5YguuJlANSi7APiREg2ZEfmUd30HG7VAjLxAoxIPZCyQ1gr.UFGMd9LyABHa5Rf7TdnjHKpTPYydRPBgZaexkz9gvlEZTe2FM1DC+6Q6WsJjqhT3WSBwmRrCkmPbweGdtt1gT3HchzlvOQJu7.gSeJkWGz6XwDlftcDUEaapvIV8n5+bsS5edsMw5erp8KZWL2vZoGH3fdiTy3zQdTppdspX3S4gea7B8mKXvsbI9L9rN3CBYD9l3mQmLkSB2egPEkNh8FZGr0iCtd+hLthxl3o5f2oQiLNJ50psHb1DQGrMUGVx3EPbbXhIfwZDbMdm7FbrLzgFt0XoRI8AA.9QRNyA+MMOP+Whjuq5B3ssCI7x3UusZE8O1PxOrCdLGtQrrzbMTWg3W4wTzkDe7T.Fh7hOFr5jP4Tgi1ESWnRsh44CiUrYtz7DppmzOPJfM0qkxOVqz05L2RUAySqEsdetjnf.3ELN05V8QAoh8TAJ+q9iEWFgcmJrULo.KEIH0R6tPIut8besIfJHV7npPPZIejUG1iC2gpGKJ9o3ZI4hZ3NvRcRTCwJ4BF2KEeG.3OVnFB.ZalB8dDNWmIq+gmI84N2A9Lohdtnd7AqJTW7grbcWIuTiwogqjstWd3GSw5ho9iog4CqZAg9UEaBZd6MAy2i1NItjSPoXffoNOfJtsN2nzfIzvrTJp.QUwsKeXZ6xjPGhAcEqXlFGQwPN+6Zn6g5MWg5OevQDEQ23NER.LCngJlNBXbD80vylIswqXdDM5RkL.b0hB.nOtJ8cmD2lu.M14eoYgZVz0Kb+6+otyxuIE.yeGqPW4gDAkiFOY9ixUVe9A.Zr3mQ8lat48Eo1LOYcaykE9JlixaAR9y2z0Ktk6BJ+lpKJ2It7cHOkcJ6RycJ69qErzCtCoLvRlF+tABMSu3OfE4iBvQ34KGEZ0pk6JhBarwF+8JiB2jLNzRubCyLHcfGsTEGjPOtUJC3hUgWu0uPKhXpY4GG6+roKtqPbCygLks2pwXoUfQ88vOAXLclruv7XWWpsJCfkM6+xOMCfgdlbp9x1oDUHSW6b1T+QPl1lBdW.WhzM1LJoabjrugduNBLBtqEuQWPjxzRu2Hko0blHe8UxWYmz4QO02Cho.XRDOgroIL5zxMa7gAPekscQyrPo00JYce0BFF++03V0POx+ASgY8RtEfPmN73398FFGKHPAUbwG5e.MToxAC
I'll take a look, but it shouldn't be a problem to recursively set the classes with the method.