Millisecond Forums

I am not aware of any books dealing with Inquisit syntax specifically (unless you read Chinese; one Chinese-language book exists).
I would recommend:
- Work through the tutorials in the Inquisit documentation to acquire the basics.
- If you have no prior programming experience, work through an "Introduction to programming" book of your choice. Which particular programming language you pick is not that importatn. Basic concepts -- variables, functions, conditional logic, etc. -- apply to virtually any programming language, including Inquisit syntax. Python is a popular choice and is perceived as a beginner-friendly language.
- Study other people's Inquisit-code. Pick some scripts from the task library you're interested in and try figure out what they do / how they work by examining the code. Try to implement some interesting modifications or extensions in some.
- Practice. Write lots of little prototypes to test things you are interested in / which are relevant to your own projects.

Hope this helps,
-Dave

I have inquisit 4.0.4.0. , but after your upgrade of my script everything is fine.
Probably this syntax issue pointed by you produce some problems.

Thanks you  Dave - you're great !

P.S
I would like to ask if you know where I can learn how to optimize my scripts in inquisit and how to write more advanced scripts in proper way to avoid such issues?
Maybe some books?

Not seeing any crash when running your script. Is your Inquisit installation up to date? You should be using 4.0.6.0, which you can obtain via https://www.millisecond.com/download/

There is, however, a slight syntax issue in that

<text S1L>
/items = stimulus
/position = (90,50)
/fontstyle = ("Arial", 10%)
/select = stimulus
</text>

should actually read

<text S1L>
/items = stimulus
/position = (90,50)
/fontstyle = ("Arial", 10%)
/select = list.stimulus.nextvalue
</text>

and so forth for the remaining <text> elements.

Also, <trial reset> should rather use the object's functions directly as in

<trial reset>
/ ontrialbegin = [item.set.clearitems(); list.stimulus.reset();]
/ stimulusframes = [1=blank]
/ response = noresponse
/ recorddata = false
/ posttrialpause = 200
</trial>

FInally, to avoid side-effects of clearing the <item> element between blocks, you should do

<text set_1>
/ items = set
/ txcolor = yellow
/ fontstyle = ("Arial", 10%)
/ erase = false
/ select = values.firstitem
</text>

<text set_6>
/ items = set
/ txcolor = yellow
/ fontstyle = ("Arial", 10%)
/ erase = false
/ select = values.sixthitem
</text>

<values>
/ firstitem = 1
/ sixthitem = 6
</values>