@kickoune103 What do you mean by "if I register pTrame" ?
This is not clear for me when your C++ code is called, is it when crc_calc is called ?
It may be ambiguous to use the same name for your global property and the function's argument.
-> m_engine.globalObject().setProperty("pTrame", l_var);
-> function cal_crc(pTrame){return pTrame})
I suggest that you change the name of the arg:
-> function cal_crc(trame){trame[0]=5;return trame})
