we learned how to use flashvars to transmit data from HTML (e.g, a qualtrics page) to scriptingRT. See a running example on qualtrics, example files here, and an explanation in the manual.
scriptingRT
blog of the flashdmdx project – We develop and use tools for online psychological research.
[...] describing how to get the mturk worder ID into qualtrics, how to get qualtrics data into scriptingRT, and how to use a code number to give mturk workers something to submit, I know put all together in [...]