Error when doing simple pendulum simulation (using Cables)

[Forenkazan]

Hello

i keep getting this error when i try to simulate
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ERROR: Illegal function expression on test2.SysCable.CableOneA._Spr_1_. Error message follows:

While processing expression: BISTOP( VARVAL(.test2._Sdm_1_) , VARVAL(.test2._Svr_1_) ,-1, MAX(0,DIF()+DIF(.test2.SysCable.LinkAnchor.winch)) , 9.7840355148E+005 * 20.55/DM(.test2._Spa_2_i._csi_2_,.test2._Spa_1_o._cso_1_) ,1, 1.0E-002*9.7840355148E+005 * 20.55**0.5/DM(.test2._Spa_2_i._csi_2_,.test2._Spa_1_o._cso_1_)**0.5 , 20.55/1E3 )
ERROR: Failed to find a valid identifier for an object of type Variable at .TEST2._SDM_1_),VARVAL(.TEST2._SVR_1_),-1,MAX(0,DIF()+DIF(.TEST2.SYSCABLE.LINKANCHOR.WINCH)),9.7840355148E+005*20.55/DM(.TEST2._SPA_2_I._CSI_2_,.TEST2._SPA_1_O._CSO_1_),1,1.0E-002*9.7840355148E+005*20.55**0.5/DM(.TEST2._SPA_2_I._CSI_2_,.TEST2._SPA_1_O._CSO_1_)**0.5,20.55/1E3)
ERROR: BISTOP(VARVAL(.TEST2._SDM_1_),VARVAL(.TEST2.
ERROR: ^

ERROR: Model did not pass verification phase.
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