defaults>
/ fontstyle = ("Copperplate", 3.25%, false, false, false, false, 5, 0)
/ txcolor = (0, 0, 0)
/inputdevice = keyboard
</defaults>
<item 1>
/1="2ab_000.bmp"
/2="2ab_005.bmp"
/3="2ab_010.bmp"
/4="2ab_015.bmp"
/5="2ab_020.bmp"
/6="2ab_025.bmp"
/7="2ab_030.bmp"
/8="2ab_035.bmp"
/9="2ab_040.bmp"
/10="2ab_045.bmp"
/11="2ab_050.bmp"
/12="2ab_055.bmp"
/13="2ab_060.bmp"
/14="2ab_065.bmp"
/15="2ab_070.bmp"
/16="2ab_075.bmp"
/17="2ab_080.bmp"
/18="2ab_085.bmp"
/19="2ab_090.bmp"
/20="2ab_095.bmp"
/21="2ab_100.bmp"
</item>
<picture biracial>
/items=1
/select=sequence
/size = (40%,30%)
/position = (50%,30%)
</picture>
<text description>
/items=("categorize this person by race using the keys marked on the keyboard")
/select=picture.biracial.currentindex
/position=(50%,75%)
</text>
<text description2>
/items=("from 0-100%, how confident you are about your judgement")
/select=picture.biracial.currentindex
/position=(50%,75%)
</text>
<trial 2ab1>
/stimulustimes = [1=biracial,description]
/validresponse=("A","B","C","D")
/timeout=(1500)
/ recorddata = true
</trial>
<openended 2ab2>
/stimulustimes = [1=biracial,description2]
/range = (0-100)
/ buttonlabel = "enter"
/ inputdevice = keyboard
/ numlines = 1
/response=anyresponse
</openended>
<block myblock>
/preinstructions = (intro)
/postinstructions = (end)
/trials=[1=2ab1;2=2ab2;3=2ab3;4=2ab2;5=2ab1;6=2ab2;7=2ab1;8=2ab2;9=2ab1;10=2ab2;11=2ab1;12=2ab2;13=2ab1;14=2ab2;15=2ab1;16=2ab2;17=2ab1;18=2ab2;19=2ab1;20=2ab2;21=2ab1;22=2ab2]
</block>
<page intro>
^^ welcome to biracial studies
</page>
<page end>
^^Thanks for participants.
</page>
When I try to run it, the error came up and states that in "openended 2ab2" , the expression is empty and invalid....
Why this happened ?
Need help thanx!