Hi Terng,
 
You can programmatically create a SoftKey item which can prompt the user to go back to the previous text.
 
You can take some help from the link given below :
 
http://developer.cisco.com/static/cuae/2.5/2.5.1SR1/Designer/Metreos.Native.CiscoIpPhone.AddSoftKeyItem.html
 
Regards,
Rakesh.

To Kumar,
 
     I believe Softkey:Exit cannot be used as part of sendexecute operation. I need to trigger a sendexecute operation to tell the phone to go back to previous text. Here is more detail workflow: My application will send medical alert to a IP Phone. The user of the phone has 2 options (Accept and Reject) after receiving the message. After user accept or reject the message, it will trigger http request back to my app. After my app receive the response, it will need to trigger sendexecute operation to ask the phone to go back to previous text if there are any. The reason is there might be multiple medical alerts got send to the user's phone as a same time (may be couple millisecond apart). We want to make sure user is able to go back to the previous text/message to provide a reponse (Accept and Reject). I look at App:Close command, however this command require a unique app id to work properly/close the right window/pane/text/message/app. My question is all these texts/messages are send from the same app so what id i need to use. Should I generate  an unique id for each message I send. If yes, where do I specify this app id in my text/message. BTW, I use createtextoptions and etc to send text message to the phone. Please advise!
 
Thank you!
 
From Terng,

Hello Lim,
 
You need to build your custom logic to implement the required feature. You can maintain the status of each message related to specific user sau "Read" and "UnRead" and on click of "Accept" or "Reject" you can send request to your script for the pending messages.
 
Regards,
Umesh