video.xxxx.currentitem does not return correct value

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video.xxxx.currentitem does not return correct value

video.xxxx.currentitem does not return correct value

Author	Message
Jeff	Jeff posted 13 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 49, Visits: 123	I am trying to use the currentitem reference to a video element, but even though the correct video plays during the trial, the references to it returns the value of the previous item. For example, if the first two items are "Item001" and "Item002", then during the first trial, "Item001" plays, during the second trial, "Item002" plays, but the references to video.prompt_snd.currentitem return "Item001" during both trials. <video Prompt_snd> / items = Prompt / select = values.Item_index </video> <text item_name> / items = (" <% video.prompt_snd.currentitem %>") </text> <trial test1_trials> / ontrialbegin = [expressions.Update_item_index] / ontrialbegin = [values.item_number = substring(video.prompt_snd.currentitem, 0, 8)] ... </trial> <expressions> / Update_item_index = if (values.block == 11) values.Item_index = counter.PK1_1_EBLMC_items.selectedvalue; </expressions> Attachments currentitem reference demo.exp (1.1K views, 12.00 KB) Tags currentitem
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Dave	Dave posted 13 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 107K	Since the simplified, yet analogous <values> / Item_index = 0 </values> <text mytext> / items = myitems / select = values.Item_index / position = (50%, 40%) </text> <text item_name> / items = (" Item name = <% text.mytext.currentitem %>") / position = (50%, 60%) </text> <item myitems> / 1 = "A" / 2 = "B" / 3 = "C" / 4 = "D" </item> <trial mytrial> / ontrialbegin = [values.Item_index=noreplace(1,2,3,4)] / stimulusframes = [1=mytext, item_name] / validresponse = (anyresponse) </trial> <block myblock> / trials = [1-4=mytrial] </block> works perfectly fine as far as I can tell (also with <video> elements instead of <text>, I would suspect there is a mistake somewhere in your script's logic. Since the script you attached cannot be run due to the missing dependencies (picture, video and sound files), I can't tell you where that mistake may be. I would recommend you first make a simple test case script along the lines of the above, verify that it works as intended and then go back to the full script to track down the error(s). Regards, ~Dave
	Like 133
Dave	Dave posted 13 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 107K	So my conclusion is that using this method, the currentitem is not updated until the element is called in the stimulustimes attribute Yes. Sampling for elements occurs in the order specified in /stimulusframes or /stimulustimes.
	Like 125