Millisecond Forums

I'd like to make countering items like these.

group1=itemA, itemB, itemC
group2=itemD, itemE, itemF
I wrote my program but it didn't work.
When I start it, it always runs group 1 ver.
How can I fix?

My program is now;

<expt>
/ blocks = [1=block.testA]
/ groups = (1 of 2)
</expt>

<expt>
/ blocks = [1=block.testB]
/ groups = (2 of 2)
</expt>

<block testA>
/ preinstructions = (instruct)
/ trials = [1-2 = startA;]
</block>

<block testB>
/ preinstructions = (instruct)
/ trials = [1-2 = startB;]
</block>

<trial startA>
/ stimulusframes = [1=clearscreen, startbutton]
/ validresponse = (startbutton)
/ inputdevice = mouse
/ recorddata = false
/ branch = [
  return trial.playsoundA;
]
</trial>

<text startbutton>
/ items = ("start")
/ position = (50%, 50%)
/ size = (20%, 10%)
</text>

<trial playsoundA>
/ ontrialend = [
  values.sound = video.mysoundA.currentitem;
]
/ stimulusframes = [1=clearscreen, mysoundA]
/ validresponse = (0)
/ trialduration = 10
/ recorddata = false
/ branch = [
  return surveypage.rating;
]
</trial>

<video mysoundA>
/ items = sounditemsA
/ playthrough = true
</video>

<trial startB>
/ stimulusframes = [1=clearscreen, startbutton]
/ validresponse = (startbutton)
/ inputdevice = mouse
/ recorddata = false
/ branch = [
  return trial.playsoundB;
]
</trial>


<trial playsoundB>
/ ontrialend = [
  values.sound = video.mysoundB.currentitem;
]
/ stimulusframes = [1=clearscreen, mysoundA]
/ validresponse = (0)
/ trialduration = 10
/ recorddata = false
/ branch = [
  return surveypage.rating;
]
</trial>

<video mysoundB>
/ items = sounditemsB
/ playthrough = true
</video>

<item sounditemsA>
/ 1 = "itemA"
/ 1 = "itemB"
/ 1 = "itemC"
</item>

<item sounditemsB>
/ 1 = "itemD"
/ 1 = "itemE"
/ 1 = "itemF"
</item>