Running Deduction with amount defined by user.

[A KB]

Hello,

This is my first time posting, but I  would just like to say I have greatly 
appreciated the wealth of information people have shared on here regarding 
issues in e-Prime, so thank you all so much :)

Okay, so my issue is as follows:  I am designing a task in which people 
will be viewing a set of "fellow participants" (random faces) and will have 
to decide how much "money" to allocate to each person presented on the 
screen.  The amount they begin with is fixed and I have been able to create 
a slide object (called Stimulus) that allows multiple choices (8 total) and 
an echo client display box that allows the participant to view the amount 
they have entered.  My problem starts here though, I would like for them to 
enter one of the multiple choice number amounts and then hit {SPACE} to go 
on to the next face, however, I need the amount they enter to give to that 
person to also be subtracted from a global variable "total" (which has been 
set at the beginning with an inline).  Unfortunately, as participants enter 
an amount, I allow keyboard input of {SPACE} and {BACKSPACE} also, just in 
case participants want to change their answer.  However, then my 
Stimulus.RESP not only has numbers, but also includes {SPACE} and 
{BACKSPACE} so I'm unsure how I am supposed to separate those from the 
numbers, so I can update their total and display it to them in a Feedback 
object (which i currently have included after the slide object stimulus, 
but have set to "Total" - 10 just to see if it would work).

I know this is probably a lot, but I would be sincerely grateful for any 
help on this matter.

Thank you in advance,
Annie

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