**To get a value history for a parameter**
The following ``get-parameter-history`` example lists the history of changes for the specified parameter, including its value. ::
aws ssm get-parameter-history \
--name "MyStringParameter"
Output::
{
"Parameters": [
{
"Name": "MyStringParameter",
"Type": "String",
"LastModifiedDate": 1582154711.976,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
"Description": "This is the first version of my String parameter",
"Value": "Veni",
"Version": 1,
"Labels": [],
"Tier": "Standard",
"Policies": []
},
{
"Name": "MyStringParameter",
"Type": "String",
"LastModifiedDate": 1582156093.471,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
"Description": "This is the second version of my String parameter",
"Value": "Vidi",
"Version": 2,
"Labels": [],
"Tier": "Standard",
"Policies": []
},
{
"Name": "MyStringParameter",
"Type": "String",
"LastModifiedDate": 1582156117.545,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
"Description": "This is the third version of my String parameter",
"Value": "Vici",
"Version": 3,
"Labels": [],
"Tier": "Standard",
"Policies": []
}
]
}
For more information, see `Working with parameter versions <https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-paramstore-versions.html>`__ in the *AWS Systems Manager User Guide*.