When you are generating a COBOL program, the oneFormItemCopybook build descriptor option indicates whether the generated program accesses the values of form-field properties by way of COBOL SET statements.
Accepting the default value maximizes performance, and this should be done when possible. However, if your program uses many forms or if the forms contain many fields, EGL generates a large number of COBOL variable names; in this case, the COBOL compiler symbol table can become so large that compilation fails.
If you need to avoid the compilation problem just described, set oneFormItemCopybook to YES. With this setting, the EGL-generated code will invoke a COBOL SET statement whenever a form-field property value is accessed.