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To add a property to a JSON text I manage to use

result=$(jq -c '.docs[0] + { "value": "someValue" }'<<<"$fileContent")

But if I want to replace "someValue" by a variable:

result=$(jq -c '.docs[0] + { "value": ($value) }'<<<"$fileContent")

This gives me

jq: error: value/0 is not defined at , line 1:
.docs[0] + { "value": ($value) }
jq: 1 compile error

I also tried without braces $value and inside brackets [$value] without success.

To add a property to a JSON text I manage to use

result=$(jq -c '.docs[0] + { "value": "someValue" }'<<<"$fileContent")

But if I want to replace "someValue" by a variable:

result=$(jq -c '.docs[0] + { "value": ($value) }'<<<"$fileContent")

This gives me

jq: error: value/0 is not defined at <top-level>, line 1:
.docs[0] + { "value": ($value) }
jq: 1 compile error

I also tried without braces $value and inside brackets [$value] without success.

To add a property to a JSON text I manage to use

result=$(jq -c '.docs[0] + { "value": "someValue" }'<<<"$fileContent")

But if I want to replace "someValue" by a variable:

result=$(jq -c '.docs[0] + { "value": ($value) }'<<<"$fileContent")

This gives me

jq: error: value/0 is not defined at <top-level>, line 1:
.docs[0] + { "value": ($value) }
jq: 1 compile error

I also tried without braces $value and inside brackets [$value] without success.

I'm new with to scripting, Thank's for further help!

To add a property to a JSON text I manage to use

result=$(jq -c '.docs[0] + { "value": "someValue" }'<<<"$fileContent")

But if I want to replace "someValue" by a variable:

result=$(jq -c '.docs[0] + { "value": ($value) }'<<<"$fileContent")

This gives me

jq: error: value/0 is not defined at , line 1:
.docs[0] + { "value": ($value) }
jq: 1 compile error

I also tried without braces $value and inside brackets [$value] without success.