Link Slider and TextInput values together

[archqt]

Hi,
i m new at QtQuick so i have some "little problem". I want an editable area to type a float from -10 to 10 with 2 digits only. I want the slider to move when i type the number or if i want to use the slider instead of the text edit, i want the text edit to change too.
With this code, if i move the slider it works, and when i type on textinput it doesn't block me when i try to go out of scope.
I don't like my code very much so many there is another way to do this (there are some errors at begininng.
Thanks

@import QtQuick 2.2
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.1

Rectangle {
property real value : parseFloat(an.text)
property alias text : texte.text

RowLayout {
    anchors.fill: parent
    width: 200
    height: 40
    Text {
        id: texte
        //width: 80
        height: 20
        font.pixelSize: 12
    }

    TextInput {
        id: an
        text: value
        clip: true
        validator: DoubleValidator {bottom: -10; top: 10; decimals: 2}
        onTextChanged: value=parseFloat(text)
    }

    Slider {
        id: slider
        minimumValue: -10
        maximumValue: 10
        stepSize: 0.1
        value: value
        Layout.fillWidth: true
        onValueChanged: parent.parent.value=value==null?0:Math.floor(value*100)/100
    }
}
onValueChanged: {
                slider.value=value
                console.log("value changed : "+value)
}

}
@