Arbitrary HTTP API Call to Enter Cell Value into a MUTL_PICKLIST Column - smartsheet-api

Question

I am quite new new to Smartsheets and to programming.
I am using Integromat to update various stuff in Smartsheets - 99% operations are done via a nice interface for dummies.
But I have an issue with one column which is MULTI_PICKLIST and which cannot be processed with native dummy-friendly UI.
Basically, I'm adding a new row and one of the columns on the way is the MULTI_PICKLIST one. In order to enter value into this cell, I need to make an arbitrary HTTP API call.
I know row ID, I know column ID. I just need to construct the body of the HTTP request.
The possible picklist value are: John or Maya or Paul. Assume I need to enter "John" into the column.
Attached, you will find my "progress". I obviously, I'm stuck with the BODY part. Can someone give me a little push, please? I think it's gotta be like 5 lines of code.
This is what I have:
DZ

Answer 1

A few things...
First, the value that you're using for URL doesn't look quite right. It should be in the following format, where {sheetId} is replaced with the ID of the sheet you're updating:
sheets/{sheetId}/rows
Second, I don't think you need the key/value that you've specified for Query String -- I'd suggest that you delete this info.
Next, I'm not sure what the other possible values are for Type (based on your screenshot, it looks like a picklist) -- but if JSON is an option, I'd suggest choosing that option instead of Text.
Finally, here's any example of the correct structure/contents for Body to update a MULTI_PICKLIST cell with the value John -- replace the value of the id property (5225480965908356) with your Row ID and replace the value of the columnId property (8436269809198980) with your Column ID:
[
{
"id": "5225480965908356",
"cells": [
{
"columnId": "8436269809198980",
"objectValue": {
"objectType": "MULTI_PICKLIST",
"values": ["John"]
}
}
]
}
]
If you want to select multiple values for a MULTI_PICKLIST cell, here's an example that specifies two values for the cell (John and Maya):
[
{
"id": "5225480965908356",
"cells": [
{
"columnId": "8436269809198980",
"objectValue": {
"objectType": "MULTI_PICKLIST",
"values": ["John", "Maya"]
}
}
]
}
]
** UPDATE **
My initial answer answer above assumed you wanted to update a cell value in a MULTI-PICKLIST column (b/c you've selected PUT for the Method value in your screenshot -- which is the verb used to update a row). Having re-read your question just now though, it sounds like maybe you want to add a new row...is that correct? If so, then the value for Method should be POST (not PUT), and Body will need to include additional objects within the cells array to specify values of other cells in the new row. The following example request (when used with the verb POST) adds a new row and populates 3 cells in that row, the first of which is a MULTI_PICKLIST cell:
[
{
"cells": [
{
"columnId": "8436269809198980",
"objectValue": {
"objectType": "MULTI_PICKLIST",
"values": ["John"]
}
},
{
"columnId": 6101753539127172,
"value": "test value"
},
{
"columnId": 4055216160040836,
"value": 10
}
]
}
]
More info about the Add Rows request can be found in the Smartsheet API docs: Add Rows.