how to access properties defined in other module pom in maven multimodule project

In pom of A.B.C i have defined a property as abc where A B C are modules. Now i want to access that property in pom of A.D.F module.

<properties>
<A.B.C>${buildNumber}</A.B.C>
</properties>

<plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>buildnumber-maven-plugin</artifactId>
            <version>1.3</version>
            <executions>
                <execution>
                <id>buildnumber</id>
                    <phase>validate</phase>
                    <goals>
                        <goal>create</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
            <timestampFormat>{0,date,dd-MM-yyyy HH:mm:ss}</timestampFormat>
            <doCheck>false</doCheck>
            <doUpdate>false</doUpdate>
            <providerImplementations>
                <svn>javasvn</svn>
            </providerImplementations>
            <revisiononscmfailure>

                    <!-- 71 Generate sequence build number based on: 72 build number and 
                        timestamp 73 -->

                    <format>Build: #{0} ({1,date})</format>

                    <items>

                        <item>buildNumber\d*</item>

                        <item>timestamp</item>

                    </items>

                </revisiononscmfailure>
        </configuration>
        <dependencies>
            <dependency>
                <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
                <artifactId>maven-scm-provider-svnjava</artifactId>
                <version>2.1.1</version>
            </dependency>
            <dependency>
                <groupId>org.tmatesoft.svnkit</groupId>
                <artifactId>svnkit</artifactId>
                <version>1.8.5</version>
            </dependency>
        </dependencies>

        </plugin>

I am using ${A.B.C} as value of version in a dependency in A.D.F module's pom.

<dependency>
        <groupId></groupId>
        <artifactId></artifactId>
        <version>${A.B.C}</version>
        <type>bundle</type>
    </dependency>

So it is giving me error: bundle must be a valid version but is ${A.B.C}.

EDIT:

or can i use version of C module in someway as i have defined:

<version>${A.B.C}</version> 

Explanation provided in answer of this question explains it in a very good manner that what can be used and when.

Reading Properties file from POM file in Maven