if Related to service means some of the field like service no want to shoe and hide Amc no , purchase no how i achive this

let issu = ZDK.Page.getField('Issue_Related_To').getValue();

if (issu == 'Service')

{

var field_obj = ZDK.Page.getField('Warranty_Cases');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Case_No');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('OYS_AMC_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Accoutant');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Vendor_Account_Name_5');

    field_obj.setVisibility(true);

}

if (issu == 'Installation') {

var field_obj = ZDK.Page.getField('Warranty_Cases');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Case_No');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('OYS_AMC_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Customer_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Vendor_Account_Name_5');

    field_obj.setVisibility(true);

}

if (issu == 'AMC/OYS') {

var field_obj = ZDK.Page.getField('Warranty_Cases');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Case_No');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Customer_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Accoutant');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Vendor_Account_Name_5');

    field_obj.setVisibility(true);

}

if (issu == 'Purchase') {

var field_obj = ZDK.Page.getField('Warranty_Cases');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Warranty_Case_No');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('OYS_AMC_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Accoutant');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Customer_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Number');

    field_obj.setVisibility(true);

}

if (issu == 'Warranty Cases') {

var field_obj = ZDK.Page.getField('Service_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service_Customer_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Service');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Amc_Oys_Account_Name');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('OYS_AMC_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Accoutant');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Installation_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Purchase_Number');

    field_obj.setVisibility(true);

var field_obj = ZDK.Page.getField('Vendor_Account_Name_5');

    field_obj.setVisibility(true);

}