perlquestion enigma Hello perlmonks, Aim: To start tracing of the module flow in my project once execution started based on user choice. Description: When user wants to see the trace of the module file he/she enable the traceing just by setting the trace parameter to TRUE in project configuration file (before starting the execution). Solution: Tried Core module: <code>use Attribute::Handlers;</code> Flow: Once the execution started it first check the trace parameter value and if it is TRUE then it reads the module file and changes the subroutine with <code>sub foo: TRACE {...}</code> and adds the Core module "Attribute::Handlers" as shown above. Once the new module is generated, then we try to load it dynamically - <code>eval "use module_name;";</code> Result: module_name module gets loaded successfully and i can call its subroutines, but those subroutines shows normal behaviour i.e. it is not using <code>sub TRACE: ATTR {...}</code> present in the module. Validated: I tried to load the new modifiled module using static loading,like ... <code>use module_name;</code> It is loading successfully and using the TRACE sub for ATTR. I need your help here to understand this behaviour change in core module when using with eval i.e. loading dynamically. Please let me know how i can make it correct without changing the design of the code. Thanks.