Two label that should have the same value are normally one too many, but if they are needed it is often possible to order them properly...

    //initialization
    int counter=0;
    //each frame
    label("count: %d\n", counter);
    label("count again, in case you missed the other label: %d\n", counter);
    if(button("increase")) { counter += 1; }

or, if the order of widgets is constrained, to buffer values:

    //initialization
    int counter_old=0;
    int counter_new=0;
    //each frame
    counter_old = counter_new;
    label("count: %d\n", counter_old);
    if(button("increase")) { counter_new = counter_old+1; }
    if(button("decrease")) { counter_new = counter_old-1; }
    label("count again, in case you missed the other label: %d\n", counter_old);