设置速度表的JS最大值

Question

所以我想设置一个动态最大值。 函数“ UpdateVolume”将每秒更新一次int。 这是我的代码： Javascript：

function updateVolumen(volumen)
        {   
            document.getElementById("gas").dataset.maxValue = volumen;
        }

<div class="w3-display-bottomright" style="z-index:-5; bottom: 115; right: 15;"> 
                <canvas id="gas" data-type="radial-gauge"
                    data-width="100"
                    data-height="100"
                    data-start-angle="20"
                    data-ticks-angle="140"
                    data-title="false"
                    data-value="0"
                    data-min-value="0"
                    data-max-value="0"
                    data-major-ticks="R,1"
                    data-border-outer-width=1.8
                    data-border-middle-width=1.8
                    data-color-border-outer="#ff0000"
                    data-color-border-outer-end="#ff0000"
                    data-minor-ticks="6"
                    data-stroke-ticks="false"
                    data-value-box="false"
                    data-animation="false"
                    data-highlights='[
                        { "from": 0, "to": 15, "color": "rgba(255,0,0,.75)" }
                    ]'
                    data-border-outer-width=1
                    data-border-middle-width=1
                    data-color-plate="#fff"
                    data-color-major-ticks="#000000"
                    data-color-minor-ticks="#000000"
                    data-font-numbers-size="38"
                    data-color-title="#000000"
                    data-color-units="#000000"
                    data-color-numbers="#000000"
                ></canvas>

但是最大值始终为“ 0”