Hi all, 

I'm new to Inquisit, so please forgive my uninformed question.

I'm trying to show an <openended> element as part of a trial (where other things will also be shown). I want this element to keep being presented until a correct response is given (or after timeout after 5 min), and each time a wrong response is given, an error message should be displayed for 2 seconds. After the correct answer is given, I want to move on to presenting another instance of this <openended> element.
I tried working with this file:
https://www.millisecond.com/support/docs/v5/html/articles/noreplacecorrect.htm
.. but unfortunately, there are parts of the text missing so I can't quite piece together what to do. 

I would be super grateful for your help.

Below is how far I got: 

<item fillertask_question>
/1 = "How many 1's do you count?

10000000000110010001
10011110010110010001
10000000000010110001
10000110000110010001
10110010000000010001
"
/2 = "How many 1's do you count?

22200111022110010000
10000111000110021000
10002211000110010000
00000001200110010010
10000111000110010000
"
</item>>

<text fillertask_text>
/ items = fillertask_question
/ select = noreplace
/ position = (50%, 50%)
/ valign = center
/ size = (80%, 40%)
/ fontstyle = ("Calibri", 22pt, false)
</text>

<text response_message_correct>
/ items = ("That was the right answer! Please go on to the next task.")
/ select = noreplace
/ position = (50%, 90%)
/ valign = center
/ size = (80%, 40%)
/ fontstyle = ("Calibri", 22pt, false)
</text>

<text response_message_wrong>
/ items = ("That was the wrong answer! Please try this task again.")
/ select = noreplace
/ position = (50%, 90%)
/ valign = center
/ size = (80%, 40%)
/ fontstyle = ("Calibri", 22pt, false)
</text>

<openended fillertask>
/ stimulusframes = [1 = fillertask_text]
/ correctresponse = ("20")
/ errormessage = true(response_message_wrong,200)
/ position = (50%, 80%)
</openended>

<block storyblock>
/ trials = [1-2 = fillertask]
</block>