Setting Variable

  for (idx in psList){

var item = psList[idx];

System.log( item.getProperty('Drive') );//extract value from result

System.log( item.getProperty('HD') );//extract value from result

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produces this

2017-02-19 01:52:43.953] [I] C:

[2017-02-19 01:52:43.954] [I] Hard disk 1

[2017-02-19 01:52:43.956] [I] G:

[2017-02-19 01:52:43.957] [I] Hard disk 2

[2017-02-19 01:52:43.959] [I] F:

[2017-02-19 01:52:43.960] [I] Hard disk 3

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it want to add something like this

for item.getProperty('Drive') that equals variable (driveLetter) set variable diskNr