This seems to work.. assuming if it is currently Sunday then you want the following Monday.
Task: monday of week
A1: Parse/Format DateTime [
Input Type: Now (Current Date And Time)
Input: %date
Input Format: M-d-yy
Get All Details: On
Output Offset Type: None
Output Offset: 3 ]
A2: Variable Set [
Name: %offset
To: 1 - %dt_day_of_week
Do Maths: On
Max Rounding Digits: 3
Structure Output (JSON, etc): On ]
A3: Variable Set [
Name: %offset
To: 1
Structure Output (JSON, etc): On ]
If [ %offset = -6 ]
A4: Parse/Format DateTime [
Input Type: Now (Current Date And Time)
Input: %date
Input Format: M-d-yy
Output Format: E MMM d
Formatted Variable Names: %monday
Output Offset Type: Days
Output Offset: %offset ]
A5: Flash [
Text: %monday
Continue Task Immediately: On
Dismiss On Click: On ]