Hello everyone :)
my other post where we solved the GET. Ok, I got the base working once again - i think. Now I really don't know how the SET command of chrome storage works.
This should set/save the value that is in a box with this ID: "ts_id_js_html"
var input_id = document.getElementById("ts_id_js_html").value;
chrome.storage.local.set({"ts_id_js": input_id});
This is where it (should)get the Value from:
<form>
<input id="ts_id_js_html" type="text" value="128856"></input>
<button id="execButton">Save/Load</button>
</form>