Read value

Hello,

I hope i have a very simply request.
I just wont to read out the data of a PERS Robtarget to a VAR num Test.X

PERS robtarget p0test := [[912.55,6576.43,-82.45],[1.80999E-06,-1,1.80999E-06,-1.81232E-06],[0,0,0,-7],[9E+09,9E+09,9E+09,9E+09,9E+09,9E+09]];

Test.X=: ????? ;

I just want to put 6576,43 into Test.X

Thanks in advance!