R help - Apr 2012 - How to display result of a calculation within panel

How do i make rpanel print the value of a calculation in the rpanel itself
- in a space just below the submit button?

The calculation uses user inputs (using rp.textentry) and takes the values
entered as input to the function via function (myRpanel)

e.g.


myfunction <- function(myRpanel){
z<- myRpanel$x + myRpanel$y
return(z)
}

myRpanel <- rp.control("My new function")
rp.textentry(myRpanel, x, myfunction, "x :", initval = 20)
rp.textentry(myRpanel, y, myfunction, "y :", initval = 10)
rp.button(myRpanel, title = "Submit", action = myfunction)



Thank you
Subramanian

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