Question Bot don't send messages first

[Igaresha]

Hello guys, i've got a problem which my brain cant solve  

Bot should send message to admin (via steam chat) after accepting trade offer (for example), but he dont do it.. 

Thats my not working code: 

manager.on('newOffer', (offer) => {
    if (offer.itemsToGive.length === 0) {
        offer.accept((err, status) => {
            if (err) {
                console.log(err);
            } else {
                console.log(`[!]Trade Accepted! Status: ${status}.`);	
		client.chatMessage(76561198074539527, 'Trade accepted! Check bot's inventory!'); 
            }

[Dr. McKay]

SteamIDs are too large to be represented as JavaScript numbers. You need to make that SteamID a string (wrap it in quotes).

[Igaresha]

Thanks alot for the help, its working fine now