# Attaching a script task in the process
## Attaching the ScriptCode Handler in the process
In order for the process to be able to invoke the handler, you need to set in the process definition ***ServiceTask*** to:
* section ***Implementation***: **Topic = eximeeScriptCodeTask**
Figure 1. The 'Implementation' section in ServiceTask
* section ***Extension properties***: you need to add a variable named **script** with **the name of the script** as the value that we want to invoke:
Figure 2. The 'Extension properties' section in ServiceTask
In the section ***Inputs*** we have the ability to define arguments for the handler, for the example script:
Figure 3. The 'Inputs' section in ServiceTask
In the example above, we added to the handler the variable **testVariable** with the value **10**.
Remember that in the handler script we have access to all global process variables using the getVariable() and getAllVariables() methods.
## Cache handling in process-handler-executor
process-handler-executor is an application that is part of the Eximee platform. It is responsible for executing script tasks. This application has a cache that helps reduce the number of requests for the contents of script task artifacts, resulting in better performance.
The cache is configurable via the PROCESS\_HANDLER\_SCRIPT\_CODE\_CACHE\_TTL parameter. Its value should be set depending on how often artifacts are updated in a given environment. In development environments, where artifacts are frequently updated, a low value is recommended, for example '1s'; for production environments, a much higher value can be used, for example '10m'.
The cache can also be cleared on demand by making a request:
```
curl --location --request POST '
http://DOCKER_HOST/process-handler-executor/cache/invalidate'
```
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