# User IDs as Custom Parameter
In Storyly, you can use your audience to create automated personalized stories.
WARNING
We do not recommend using Device ID as a user identifier. Frequent changes to Device ID may cause loss of personalized story data.
# Add an Audience and Create Templates
First go to Audience
under settings and add your CSV file.
You can give your Audience a name and after you can set the User ID from your your audience data. Once those are completed, click on `Create and your audience will be set.
Once you upload your CSV file, click on Create Personalized Stories
and continue with Create Using Audience
.
Choose which of the Audience data you'll be creating your automated personalized stories.
Select your desired template or create a new one in Template Studio.
Your data will be shown on this selected story template. Please match your data with the placeholders.
# Passing Custom Parameter to Storyly SDK
This section shows you how to send a custom parameter for personalized stories.
Storyly SDK allows you to send a string parameter in the initialization process. The customParameter
field is used as user identifier for personalized stories.
StorylyParam()
...
..storylyCustomParameters = '';
WARNING
You are allowed to send a 200 characters string value with the storylyCustomParameters
field. If you exceed the size limit, your value will be set to nil.