Why I can't measure the signal?

[caoyang789]

   I get the sample of DoubleAction_OPWM_demo in Quick_start r4.0 run
on the MPC564EVB(MAX-0287-REV.D),I fellow Make-->debug-->run steps.but
I can't test the output signals are generated on MDA11 (MIOS_DA0) and
MDA12 (MIOS_DA1) with oscillograph.Why do this happen?
   I use the tools:codewarrior 8.7,IDE 5.9,MPC564EVB,Quick_start r4.0