Thanks for the reply.
Removing the .text on the end of the actionscript for the reset button does appear to remove the information from the dynamic boxes, however I am now unable to add anything to these dynamic text boxes in the next order.
The code for the button is as follows.
on (release) {
gotoAndPlay(1);
txt = "";
change1 = "";
cashpaid = "";
}

the txt is for the order display, the change1 is the calculated change dynamic text and the cashpaid is the amount the customer has given, inputted via a number pad.

Could be problem be arising with the global which allows me to add the cost of items to the txt.text - _global.cost= 0.00; ?
Thankyou