Applying formats to compued vars

Hi,

it would be very helpful if formats could be applied to computed variables - especially when working with date/time columns. The functionality seems to be there, but it's breaking the table reference.

Example: Based on a datetime column I can successfully add a time column that holds the hour of the datetime column.

# example table
conn.datastep.runCode(
	code =
	'''data test;
		format datetime e8601dt19.;
		datetime = dhms("03mar2024"d, 9, 50, 0);
		price    = 101.4;
		output;
		datetime = dhms("03mar2024"d, 10, 20, 0);
		price    = 102.5;
		output;
	run;''',
	single = 'yes'
)
tbl = conn.CASTable('test')

# add column containing the hour of the datetime column
tbl['time'] = tbl['datetime'].dt.hour*60*60

# apply time format to new column
tbl.computedvars = [{'name':'time', 'format':'time8.'}]

# check if time format was applied
tbl.columnInfo()

# check if time format works
tbl.head()

Unfortunately, after applying the format as shown above, I can't execute any operations on the table anymore:

tbl[tbl['price']>=102].head()

Start by running the provided Python reproduction with CASTable, computedvars, columnInfo(), and the filtered head() call. Trace how applying the format to the computed time column affects subsequent table operations, and consider the issue done when the format is retained while filtering tbl by price still executes successfully.