3rd/4th/5th time bars

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So I have been editing the Sting tune Shape of My Heart, which plays the first 8 bars 5 times and then moves on.
Trouble is on the 5th time the 8th bar is slightly different, so I want to have a 1,2,3,4th time bar for the first 4 repeats then a 5th time bar for the 5th repeat.
To make it play the first section 5 times I have added text ('5x')on the 4th beat just before the repeat sign (this is the 1/2/3/4th time bar - I have used the empty bracket to mark this and used text to indicate '1.2.3.4.').
So it looks right as a score, but when played in iReal Pro it plays through the 1/2/3/4th time bar on the 5th report and then plays the 5th time bar as well.
Is there a way to make a 1st time bar (which is also a 2/3/4th etc bar) work as written when playing the score?