Welcome to the JMP Community
The task you have specified is a very easy thing to do in JMP.
First read the data into JMP
Add the Spec Limits to the Column Properties for the data column by right clicking on the header for the column and selecting Column Properties=>Spec Limits
In the dialog box that opens, enter in the limits. Make sure you check the "Show as Graph Reference Lints"
Click OK and go back to the data table
Go to the Graph pull down menu and select Graph Builder
In the Graph Builder window drag the data column to the X drop area
Now Click on the Histogram Icon at the top of the graph
The graph will now show the histogram with the specified limits
Jim