You have detailed code reference for each of your modules located under Administration->Module Builder->Your module-> Code Reference for Your module. The correct way for you to get the field in question is presented below.
DynamicModuleManager dynamicModuleManager = DynamicModuleManager.GetManager();
Type MyType = TypeResolutionService.ResolveType(
var TheType= dynamicModuleManager.GetDataItems(MyType).FirstOrDefault();
var MyField = TheType.GetValue(
Ivan D. Dimitrov
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