sets a custom format for a cell and returns the name of the format
| rowId | number | the row id |
| columnId | number | the column id |
| format | string | conditions for formatting the cell content, separated by semi-colons |
| page | string | optional, the name of the sheet |
| string | the name of the format |
$$("ssheet").setFormat(2, 2, "[>1000]> 0.0;[>100]Check 0,000.0#;[=0]Nope", "Sheet1");
Check the format details.
When a new column or row is added, new cells inherit the existing formats in the following way: