Using Tasker to automate file installation

[cuono]

Hi guys would really appreciate some guidance on setting up a bunch of tasks to install individual apps.
I can easily create one task for each but when I create one action with several tasks to install apk files from a USB it only installs the first file in my list and it also needs me to authorise it before it completes it.
Is there a way to automate this process? i.e. before it steps to next task it must wait until first task is complete in my case the file is installed.
My action with tasks looks like this:
Open File
File /storage/external_storage/sd1/restore.apk
File /storage/external_storage/sd1/restore1.apk
File /storage/external_storage/sd1/restore2.apk
Flash
Text Finished

If I execute the action all i see is the first file start to install then i see finished flash on the screen even before the first file has installed.

I'm using tasker on an android media box if that helps.

Thanks in advance

 

[Unforgiven]

I moved this into the Tasker subforum where I think you well get better exposure.