Can't Update Value in Nested Dictionary Inside List and get the same list structure with updated value

Question

In the below piece of code, I'm attempting to update "id" value to 567. 
 The output expected is the same as what is in local!groupEndpointResponse with the updated value of id. 
 a!localVariables(
 local!groupsEndpointResponse:{
 {totalResults: 1, 
 startIndex: 1, 
 itemsPerPage: 100, 
 schemas: {"schema1"}, 
 Resources: {
 {meta: {created: fn!datetime(2024, 12, 8, 3, 12, 45, 350), lastModified: fn!datetime(2024, 12, 8, 3, 12, 46, 910), resourceType: "Group"}, 
 displayName: "Abc", 
 members: {{display: "Joe", 
 value: "123"}}, 
 externalId: "null", 
 id: 2}}}, 

 {totalResults: 1, 
 startIndex: 1, 
 itemsPerPage: 100, 
 schemas: {"schema2"}, 
 Resources: {
 {meta: {created: fn!datetime(2024, 12, 8, 3, 12, 45, 690), lastModified: fn!datetime(2024, 12, 8, 3, 12, 46, 770), resourceType: "Group"}, 
 displayName: "lmn", 
 members: {{display: "Sam", value: "789"}}, 
 externalId: "null", 
 id: 2}}}}, 
 
 a!forEach(
 items: local!groupsEndpointResponse,
 expression:a!update(index(fv!item.Resources, 1, null),"id", "567"))
 ) 
 Expected Output: Crossed id values should be 567. 
 Output I'am getting: What is the best approach to achieve this.

Stefan Helzle · Accepted Answer

This is how I do it. A nested a!update. 
 a!localVariables(
 local!groupsEndpointResponse: {
 {
 totalResults: 1,
 startIndex: 1,
 itemsPerPage: 100,
 schemas: { "schema1" },
 Resources: {
 {
 meta: {
 created: fn!datetime(2024, 12, 8, 3, 12, 45, 350),
 lastModified: fn!datetime(2024, 12, 8, 3, 12, 46, 910),
 resourceType: "Group"
 },
 displayName: "Abc",
 members: { { display: "Joe", value: "123" } },
 externalId: "null",
 id: 2
 }
 }
 },
 {
 totalResults: 1,
 startIndex: 1,
 itemsPerPage: 100,
 schemas: { "schema2" },
 Resources: {
 {
 meta: {
 created: fn!datetime(2024, 12, 8, 3, 12, 45, 690),
 lastModified: fn!datetime(2024, 12, 8, 3, 12, 46, 770),
 resourceType: "Group"
 },
 displayName: "lmn",
 members: { { display: "Sam", value: "789" } },
 externalId: "null",
 id: 2
 }
 }
 }
 },
 a!forEach(
 items: local!groupsEndpointResponse,
 expression: a!update(
 data: fv!item,
 index: "Resources",
 value: a!update(
 data: fv!item.Resources,
 index: 1,
 value: a!update(
 data: fv!item.Resources[1],
 index: "id",
 value: 567
 )
 )
 )
 )
)

Can't Update Value in Nested Dictionary Inside List and get the same list structure with updated value

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