Using eval() inside signal handler causes error on qml compiler

property string toto :"0.5+1920"
Item{
    focus:true
    Keys.onPressed: {
        if(eval(toto))
        {
            console.log(eval(toto));
        }
    }
}

error: error: The use of the arguments object in signal handlers is
not supported when compiling qml files ahead of time, because it may be ambiguous if
any signal parameter is called "arguments". Unfortunately we cannot distinguish
between it being a parameter or the JavaScript arguments object at this point.
Consider renaming the parameter of the signal if applicable.