The problem is here "Can't find variable: VAR_RANDOM_LIST_VIDEO".
Make sure the value of the variable is correct.
You can check this in the variable inspector.
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I create script to upload pdf on slideboom, but still cant click add file and upload button even i already install and enable flash on browser and bas, i dont know wht is the problem any help ? this is the script http://www.filedropper.com/slideboomtest