Add a Dynamic Property

In the Administration Console, go to Index > Data Model.

Under Classes, select the class (if the property is not part of the default class).

Under Dynamic properties for the <Classname> class (below), click Add dynamic property.

Select a Name and Data type.
Select a Semantic type. This defines the type of semantic processing for the property.
Select a Field type.

Define Matching rules:

For Mode, select a matching method:

Exact: includes the specified meta name only.
Prefix: includes meta names that begin with this string.
Note: You can select the Unprefix check box if you want to remove the prefix from search queries.
Suffix: includes meta names that end with this string.
Substring: includes meta names that contain this string.
Pattern: includes meta names that match this regular expression.

For Pattern, specify the string or regular expression.

Click Accept.

(Optional) To display meta values under their meta name in hit results or the Refinements panel, select Store meta names.

Note: Selecting this option impacts how you search with dynamic property prefix handlers. See Search When Storing Meta Names.

(Optional) Select or clear the remaining options as required.

Click Apply.

Go to Home > Indexing, click Clear, and then select the build groups that are modified by this property.

Scan your documents.