animation - Android Animated Vector Drawable: change rotation degree at runtime -

i'm trying make android vector animation, contains rotation on vectorial group. basically, if degree transition constant, use resources:

my vectordrawable:

<vector     xmlns:android="http://schemas.android.com/apk/res/android"      android:width="64dp"      android:height="64dp"      android:viewportheight="600"      android:viewportwidth="600">     <group         android:name="myrotationgroup"          android:pivotx="300.0"          android:pivoty="300.0"          android:rotation="0">         <path             android:name="myname"              android:fillcolor="#000000"              android:pathdata="m300,70 l 0,-70 70,70 0,0 -70,70z"/>     </group> </vector> 

my animatedvectordrawable:

<animated-vector     xmlns:android="http://schemas.android.com/apk/res/android"     android:drawable="@drawable/my_vector_drawable" >      <target          android:name="myrotationgroup"           android:animation="@animator/my_rotation" />  </animated-vector> 

and objectanimator:

<objectanimator      android:duration="500"       android:propertyname="rotation"       android:valuefrom="0"       android:valueto="360" /> 

however, can see above, final degree of rotation set in objectanimator resource, 360° instance.

for animation, how can change programmatically final value? rotation degree need computed other data, don't know target value before animation starts.

thank help!