Unable to change X-axis values in playback

I need help with an issue in SignalExpress which I am new to
and struggling a bit.
In PlayBack mode DisplayView I can’t get the X-Axis to
retain the values I set. I can change them but as soon as I click ‘play’ the
max value alters to what appears to be the buffer length of the recorded data,
the on screen, AutoScale is off. The play-position indicator shows that I have
more data than one buffer length and exporting the log file to Excel confirms
that all the data (greater than one buffer in length) is there.
Regards
ed

My Mike,
Thanks for replying and giving suggestions.
I don't have Labview but could get evaluation version if you think this might help. I would be even less familiar with this than SignalExpress so the effort might not be worth it.
I have tried pre and post saving to set the x-axis, the results are the same. It looks like the values I set in the x-axis are overwritten by values within or associtaed with the recorded/saved file and I feel I must be missing something simple. I tried the help function and as far as I'm aware I'm following the information necessary.
What I do is  set signal express to playback mode and in dataview having dragged my voltage logged file to the graph I right click and select 'properties' - 'scales'. for the 'time' option I uncheck autoscale andalter the max value to 300 ( I have 300 sec of recorded data) and click 'ok'. My data view graph changes x-axis to 300 max and a small ammount of data is compressed at the left hand side of the graph. I then click play at the top and the x-axis changes to 10 sec. The bar at the top shows 300s and scrolls though with what apperas to be just evry 10s of data (block) being displayed on the main graph.
If I then check 'properites' for the x-axis as above, auto sclae is still unchecked and max value reads 9.9s. I can change this and the graph x-axis changes until the next block gets placed on the screen where the x-axis reverts to 10s. After I make this change my data of unkown block gets compressed to the first 10s at the left, it fills the graph once updtae occurs but only the current (I assune) block.
if I look at 'playback options' I see nice little images of my data over 300s  with start time 0 stop time 300 relative to log start time, block size 1000, overlap 0%, ignore last itteration if partial is checked and play entire intervals only is not checked.
I set the record side up for sampling 100Hz with block size 1000.
Hope this information helps you understand what is going on and that you can tell me what I've missed.
Kind regards
Ed Bye

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