Bug ID 539847: VPE removing new lines in variable assignment expressions

Last Modified: Aug 19, 2026

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4

Fixed In:
12.1.0

Opened: Aug 13, 2015

Severity: 4-Minor

Symptoms

VPE is removing new lines in variable assignment expressions

Impact

It's impossible define multiline variable assignment expressions

Conditions

This occurs when creating/editing multi-line tcl code within APM for the session variables and saving the changes.

Workaround

Edit directly bigip.conf

Fix Information

Now Variable Assign support and preserves newlines

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips