DataSource,
Switch(
Month(ColumnName),
1,Collect(CollectionName,{'1Jan': Text(ColumnName)}),
2,Collect(CollectionName,{'2Feb': Text(ColumnName)}),
3,Collect(CollectionName,{'3Mar': Text(ColumnName)}),
4,Collect(CollectionName,{'4April': Text(ColumnName)}),
5,Collect(CollectionName,{'5May': Text(ColumnName)}),
6,Collect(CollectionName,{'6June': Text(ColumnName)}),
7,Collect(CollectionName,{'7July': Text(ColumnName)}),
8,Collect(CollectionName,{'8Aug': Text(ColumnName)}),
9,Collect(CollectionName,{'9Sep': Text(ColumnName)}),
10,Collect(CollectionName,{'10Oct': Text(ColumnName)}),
11,Collect(CollectionName,{'11Nov': Text(ColumnName)}),
12,Collect(CollectionName,{'12Dec': Text(ColumnName)})
)
)

Best Regards,
Charlie Choi
Hi @MathewM ,
Please try the following formula:
ForAll(