The value for annotation attribute Test.enabled must be a constant expression

Basically, I wanted to use a constant boolean attribute of Context class which I have changed via reflection so that I can dynamically set the @annotated enabled for a testNG method in a TestNG class. The TestNG class has a static final attribute which is the same as the Context.DISBLE_TEST_CASES_IF_OLD_STACK. I have pasted the code below for the TestNG class and its method. The end goal for me is to toggle the enabled value or basically disable the test based on the the context if its old environment or new environment

 package com.abc.api.core.context;

    import java.lang.reflect.Field;
    import java.lang.reflect.Modifier;


    public class Context {
        public static final boolean DISBLE_TEST_CASES_IF_OLD_STACK = getConstantReflection();


        public static boolean getConstantReflection()
        {
            System.out.println(DISBLE_TEST_CASES_IF_OLD_STACK);
            try {
                setEnableFlagBasedOnStackForTestCases();
            } catch (NoSuchFieldException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (SecurityException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println(Context.DISBLE_TEST_CASES_IF_OLD_STACK);
            try {
                final Field fld = Context.class.getDeclaredField("DISBLE_TEST_CASES_IF_OLD_STACK");
                return (Boolean) fld.get( null );
            } catch (NoSuchFieldException e) {
                return (Boolean) null;
            } catch (IllegalAccessException e) {
                return (Boolean) null;
            }
        }

        private static void setEnableFlagBasedOnStackForTestCases() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException{


            Field f = Context.class.getDeclaredField("DISBLE_TEST_CASES_IF_OLD_STACK");
            f.setAccessible(true);

            //'modifiers' - it is a field of a class called 'Field'. Make it accessible and remove
            //'final' modifier for our 'CONSTANT' field
            Field modifiersField = Field.class.getDeclaredField( "modifiers" );
            modifiersField.setAccessible( true );
            modifiersField.setInt( f, f.getModifiers() & ~Modifier.FINAL );

            if (TestcaseContext.getContext().equalsIgnoreCase(Context.OLD_STACK)) {
                f.setBoolean(null, false);
            }else {
                f.setBoolean(null, true);
            }
        }

    }

TESTNG CLASS AND METHOD example:

package com.abc.api.test.tests.TestA;

import com.abc.api.core.context.Context;

public class TestA extends TestCommon {

    private static final boolean ENABLE_DISABLE = Context.DISBLE_TEST_CASES_IF_OLD_STACK;

    /**
     * 
     */
    @BeforeTest
    void setPropertiesFile() {
      ......

    }

    /**
     * PATCH Positive Test Cases
     * 
     */

    @Test(priority = 11, enabled=ENABLE_DISABLE)
    public void testPositive1() {
        ......
    }
}