Millisecond Forums

Hi everyone,
I'm trying to have a trial that goes like this:
Fixation cross jittering between 2100-2900ms, then text with an emotion regulation strategy (distraction or reappraisal) is presented for 2000ms, a blank screen jittering between 400-800ms and finally an image is presented for 3000ms.

I have figured out so far (i think) how to get my fixation cross to have a random presentation time, but what I am unsure of is how to present stimuli after that. If I don't know when the fixation cross will end, how do I know what time to write in /stimulustimes in my trial. See my code below:

<trial regulationone>
/ontrialbegin = [
    values.fixationrand = rand(2100, 2900);
    trial.regulationone.insertstimulustime(text.fixation, values.fixationrand):
    ]
/ stimulustimes = [0=fixation]
/ ontrialend = [
trial.priming.resetstimulusframes(); ]
</trial>

For example, i don't think I can have "/ stimulustimes = [0=fixation; 2900=strategy]" as then there may be a gap between the cross disappearing and the stimuli popping up.

My second question, is how do I then include other stimuli that jitter (e.g., the blank screen) later in this trial as I assume I can't use the same line of code that follows the /ontrailbegin?
Thanks for your help,
Lewis