Yes, SequenceContext might have been a better choice for me too.
Here is an example where I used the syncronization manager of TS to send a notifier from the UI to teststand with the serial number and continue boolean as data. The Notifier in TS then put the data into the local.
The Notifier must be created first in TS and then I passed the name of the notifier to the UI with a UIMessage.
SyncManager, just another option to explore...