does anyone know anything about regex (formulas)?

[Joe Blow]

for example,

    BodyArmour           StabVest  
    Training             99.99999  
    TazerTrained         true  
END

and

    BodyArmour           StabVest  
END

now I use this:
BodyArmour .+ StabVest
to find what
and I use this:
$0\n\t\tTraining\t\t\t 99.99999\r\n\t\tTazerTrained\t\t true
to replace…

trouble is everytime I find and replace I end up adding extra training and tazertrained lines to lines that already have them…

QUESTION: Does anybody know a way around that…I only want to replace the ones that don’t already have training and tazertrained after them. (ie the 2nd example)

here is a file for testing (if you need it)
http://www.filedropper.com/test_257

[MAPJe71]

Find what:

(BodyArmour[\t ]+StabVest[\t ]*)(\r?\n|\r)((?:\t| {4})END)

Replace with:

$1$2\t\tTraining\t\t\t 99.99999$2\t\tTazerTrained\t\t true$2$3

[Joe Blow]

thanks mapje71