suspendHistory it doesn’t work for me in my plugin?

Photoshop
1

Can you help me make it work, because it doesn’t work for me in my plugin?
this code:

const suspendHistory = async (theSuspendName, functionName) => {await exeModal(doStuff, {"commandName": "Please Wait"});

 async function doStuff(executionContext){
    let hostControl = executionContext.hostControl;
		let documentID = await app.activeDocument._id;
    // Suspend history state on the target document
    let suspensionID = await hostControl.suspendHistory({
        "historyStateInfo": {
            "name": theSuspendName,
            "target": [ {_ref: "document", _id: documentID}]
        }
	 });
//	 console.log(functionName);
	 await exeModal( functionName,	 );
	 
   await hostControl.resumeHistory(suspensionID);
	 };
};

const doIt = async () => {
	await suspendHistory("2D Gradient", doIt_1);
};

document.getElementById("btn_DoIt").addEventListener("click", async function () {await doIt()});

Regards…
Mohamed Fathy…