This is a returned promise from an API, it accesses data and I am able to console log it inside the label, but how do I format it to output inside this Ionlabel/on the actual page not in the console?

     <IonList>

           <IonLabel>{
                postToAPI("ViewTransactions", [0]).then((result) => {
                 return ( <IonLabel>"+result[0]['TransactionAmount']+"</IonLabel>"); 
                })
           }</IonLabel>

 </IonList>