How to use content controls and if-then-else statements in word with power automate?

I am using Power automate to populate my microsoft word template using a JSON Payload. To create the template I am using content control - plain text, I create tags using plain-text which are then assigned the values by the power automate flow. I wish to add check - boxes and use if else statements to either check the boxes or leave them blank according to the value of that particular data. For example:

Word: (all the placeholders are written here using << >> and the IF statement is written using the field option from Insert -> QuickParts-> Field)
Firm’s Full Legal Name, Include Any DBA: <<LegalName>>

Primary Practice Address: <<PrimaryPracticeLocation>>
City/State/Zip: <<CityStateZip>>

Address for Additional Locations: <<Additional Address>> No Other Locations : {IF <<"FirstApplication">> = "True" "☑ " "◻" \* MERGEFORMAT }

Json Payload:
[

{

"id": "0b2c7418-7b69-4689-babf-fb1cdc66dd85",

"templateName": "HHHApplication.docx",

"data":

[

{

"id": "c01149ed-56d8-4722-b716-c99bff0d4a30",

"LegalName": "Alex Mitchel",

"PrimaryPracticeLocation": "2-B acdb",

"CityStateZip": "NY, 10038",

"AdditionalAddress": "N.A. City hall",

"OtherLocation": "True"
}
]
}
]