The number of the currently running trial.
This value increments each time a trial is run.
The following displays the value of currenttrialnumber in a text stimulus:
<text sometext>
/ items= ("currenttrialnumber = <% block.currenttrialnumber %>")
</text>
The following displays the value of currenttrialnumber in an instruction page:
<page somepage>
currenttrialnumber = <% block.currenttrialnumber %>
</page>