change text in text class Options

[MikeAngel]

So, I am trying to change a text in a svg class from code. I tried various stuff like document.getElementById(element).innerHTML and else but it seems to not work.

this is the code I am having:

CODE

        <svg class="Rechteck_4">
            <rect id="Rechteck_4" rx="7" ry="7" x="0" y="0" width="477" height="79"></rect>
            <text x="138" y="50" vertical-align='middle' text-align='left' font-family="Verdana" font-size="35" fill="white">000000000</text>
        </svg>

I tried the document .text class the .innerText class the value and more but it seems to wont work.. any ideas?