tags in a specific order in a FIX packet

Hello,

I would like to set tags in a FIX packet in a specific order

For instance, in a FIX quote request packet, I need to set the tag38 after the tag303 and quickfixj set it before even if in my source code I set it after:

...
// Instrument
group.set(new Symbol("EUR/USD"));

// Quote request type
group.setInt(303, 2);

// Quote type
group.setInt(537, 2);

// Order Qty
group.setString(38, "1000000");

qr.addGroup(group);
...

Here is the packet it sends: "...146=1 55=EUR/USD 38=1000000 303=2 537=2 ..."
I need to send it like this: "...146=1 55=EUR/USD 303=2 537=2 38=1000000..."

Thank you