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<p class="MsoNormal"><span style="font-size:10.0pt;line-height:115%">Hi,<br>
<br>
I hope someone can help and apologies in advance for my elementary coding
skills.<br>
<br>
I am trying to create a response bar (drawn by the canvas function) that is
incrementally filled by each button press (each of the multiple button presses
required for an individual trial). I have tried to combine the ScoreBar and
MultipleResponseCollection sample scripts from the PST eprime support site. I
want the number of presses required to be randomly determined by an attribute
called MaxCount (which is set by RewardProb) at the beginning of each trial.
Eventually, the duration of each trial will also vary depending on RewardProb
(this bit works well in another script I have). <br>
<br>
I am attaching the script that I have so far. It seems to be partially working.
When the number of presses set by the attribute MaxCount is reached, the trial
terminates as it should, however, there is a substantial delay before the
response bar starts filling. Also, I would like the canvas to be cleared
of all images after each trial (because the next thing I am going to work on is
making the size of the response bar variable on each trial). But for now, I
would greatly appreciate any help with getting a response bar that fills with
each press on a single trial and clears after the trial is finished. <br>
<br>
Many thanks in advance if you can help!</span></p>
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