Dynamic numbers of trials / Conditional trialnumber

Author	Message
Jeff	Jeff posted 12 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 49, Visits: 123	Hi all. Is it possible to conditionally specify the number of trials in a block element? I've tried a couple of different approaches (below), but I keep getting an 'invalid syntax' error. More details attached. <block K_Prac_block> / trials = [1 - values.LETTER_item_num = noreplace(LETTER_Prac_trials)] </block> I've also tried this (both with and without quotes): <block K_Prac_block> / trials = [1 - "<%values.LETTER_item_num%>" = noreplace(LETTER_Prac_trials)] </block> Thanks, Jeff Attachments Conditional_trialnumber.exp (778 views, 988 bytes) Tags block-element trialnumber
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Dave	Dave posted 12 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	Syntax like the one above is not permitted. You need to implement this differently, e.g. using a /stop attribute. <values> / ntrials = 40 </values> <block myblock> / stop = [block.myblock.trialcount>values.ntrials] / trials = [1-10000=mytrial] </block> Regards, ~Dave
	Like 87
Jeff	Jeff posted 12 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 49, Visits: 123	Thanks, Dave. That did the trick. To clarify for those who find this later, the stop attribute executes after the block has run so if the ntrials variable equals the maximum, then the stop function should be / stop = [block.myblock.trialcount >= values.ntrials] Jeff
	Like 101