NullPointerException for one element in the Model.

Hello Experts,
I executed an RFC from my WebDynpro project. I believe it gets the correct values in the model, but when I try to bind the node to a screen element, the exception occurs.
The node in question is of the type BigDecimal. I'm not sure if this is the cause but when I try to display other nodes from the same level in the node hierarchy, it displays the String nodes correctly.
Here is the exception I got:
java.lang.NullPointerException
    at com.sap.aii.proxy.framework.core.JcoBaseTypeData.getElementValueAsBigDecimal(JcoBaseTypeData.java:648)
    at com.sap.tc.webdynpro.modelimpl.dynamicrfc.DynamicRFCModelClass.getAttributeValueAsBigDecimal(DynamicRFCModelClass.java:259)
    at com.kaisa.mwci.models.getnetworks.Zps_Fm_Get_Network_Num_Output.getEx_Plcstt(Zps_Fm_Get_Network_Num_Output.java:179)
    at com.kaisa.mwci.wd.wdp.IPublicMainComp$INetworksElement.wdGetObject(IPublicMainComp.java:1156)
    at com.sap.tc.webdynpro.progmodel.context.MappedNodeElement.wdGetObject(MappedNodeElement.java:351)
Thanks in advance. The members of this forum has always been helpful.
Cheers,
Alfonso

Hi
Problem is due to BigDecimal Field of return by rfc Before binding this field to UI element do the proper conversion , Because this field work fine ABAP but have problem in java , I ll suggest to avoid direct binding of the ui element from model node create separate Value node for this.
String str1 = "456.42";
        String str2 = "-356.32";
        // To convert s String to a BigDecimal
        BigDecimal bigDecimal1 = new BigDecimal(str1);
        // To convert s String to a BigDecimal
        BigDecimal bigDecimal2 = new BigDecimal(str2);
Best Regards
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