Try this:
action:
- service: mqtt.publish
data_template:
topic: wled/all/api
payload: "{{ ['[FX=00] Solid','[FX=01] Blink','[FX=02] Breathe','[FX=03] Wipe','[FX=04] Wipe Random','[FX=05] Random Colors','[FX=06] Sweep','[FX=07] Dynamic','[FX=08] Colorloop','[FX=09] Rainbow','[FX=10] Scan','[FX=11] Dual Scan','[FX=12] Fade','[FX=13] Chase','[FX=14] Chase Rainbow','[FX=15] Running','[FX=16] Saw','[FX=17] Twinkle','[FX=18] Dissolve','[FX=19] Dissolve Rnd','[FX=20] Sparkle','[FX=21] Dark Sparkle','[FX=22] Sparkle+','[FX=23] Strobe','[FX=24] Strobe Rainbow','[FX=25] Mega Strobe','[FX=26] Blink Rainbow','[FX=27] Android','[FX=28] Chase','[FX=29] Chase Random','[FX=30] Chase Rainbow','[FX=31] Chase Flash','[FX=32] Chase Flash Rnd','[FX=33] Rainbow Runner','[FX=34] Colorful','[FX=35] Traffic Light','[FX=36] Sweep Random','[FX=37] Running 2','[FX=38] Red & Blue','[FX=39] Stream','[FX=40] Scanner','[FX=41] Lighthouse','[FX=42] Fireworks','[FX=43] Rain','[FX=44] Merry Christmas','[FX=45] Fire Flicker','[FX=46] Gradient','[FX=47] Loading','[FX=48] In Out','[FX=49] In In','[FX=50] Out Out','[FX=51] Out In','[FX=52] Circus','[FX=53] Halloween','[FX=54] Tri Chase','[FX=55] Tri Wipe','[FX=56] Tri Fade','[FX=57] Lightning','[FX=58] ICU','[FX=59] Multi Comet','[FX=60] Dual Scanner','[FX=61] Stream 2','[FX=62] Oscillate','[FX=63] Pride 2015','[FX=64] Juggle','[FX=65] Palette','[FX=66] Fire 2012','[FX=67] Colorwaves','[FX=68] BPM','[FX=69] Fill Noise','[FX=70] Noise 1','[FX=71] Noise 2','[FX=72] Noise 3','[FX=73] Noise 4','[FX=74] Colortwinkle','[FX=75] Lake','[FX=76] Meteor','[FX=77] Smooth Meteor','[FX=78] Railway','[FX=79] Ripple','[FX=80] Twinklefox','[FX=81] Twinklecat','[FX=82] Halloween Eyes']|random }}"
If it works you can delete your random sensor.
This is my random effect script, it randomises the effect, pallet and speed:
wled_random:
alias: 'Randomise'
sequence:
- service: mqtt.publish
data_template:
topic: wled/bar_led/api
payload: "{{ ['[FX=00] Solid','[FX=01] Blink','[FX=02] Breathe','[FX=03] Wipe','[FX=04] Wipe Random','[FX=05] Random Colors','[FX=06] Sweep','[FX=07] Dynamic','[FX=08] Colorloop','[FX=09] Rainbow','[FX=10] Scan','[FX=11] Dual Scan','[FX=12] Fade','[FX=13] Chase','[FX=14] Chase Rainbow','[FX=15] Running','[FX=16] Saw','[FX=17] Twinkle','[FX=18] Dissolve','[FX=19] Dissolve Rnd','[FX=20] Sparkle','[FX=21] Dark Sparkle','[FX=22] Sparkle+','[FX=23] Strobe','[FX=24] Strobe Rainbow','[FX=25] Mega Strobe','[FX=26] Blink Rainbow','[FX=27] Android','[FX=28] Chase','[FX=29] Chase Random','[FX=30] Chase Rainbow','[FX=31] Chase Flash','[FX=32] Chase Flash Rnd','[FX=33] Rainbow Runner','[FX=34] Colorful','[FX=35] Traffic Light','[FX=36] Sweep Random','[FX=37] Running 2','[FX=38] Red & Blue','[FX=39] Stream','[FX=40] Scanner','[FX=41] Lighthouse','[FX=42] Fireworks','[FX=43] Rain','[FX=44] Merry Christmas','[FX=45] Fire Flicker','[FX=46] Gradient','[FX=47] Loading','[FX=48] In Out','[FX=49] In In','[FX=50] Out Out','[FX=51] Out In','[FX=52] Circus','[FX=53] Halloween','[FX=54] Tri Chase','[FX=55] Tri Wipe','[FX=56] Tri Fade','[FX=57] Lightning','[FX=58] ICU','[FX=59] Multi Comet','[FX=60] Dual Scanner','[FX=61] Stream 2','[FX=62] Oscillate','[FX=63] Pride 2015','[FX=64] Juggle','[FX=65] Palette','[FX=66] Fire 2012','[FX=67] Colorwaves','[FX=68] BPM','[FX=69] Fill Noise','[FX=70] Noise 1','[FX=71] Noise 2','[FX=72] Noise 3','[FX=73] Noise 4','[FX=74] Colortwinkle','[FX=75] Lake','[FX=76] Meteor','[FX=77] Smooth Meteor','[FX=78] Railway','[FX=79] Ripple','[FX=80] Twinklefox','[FX=81] Twinklecat','[FX=82] Halloween Eyes']|random }}"
- service: mqtt.publish
data_template:
topic: wled/bar_led/api
payload: "{{ ['[FP=00] Default','[FP=01] Random Cycle','[FP=02] Primary color','[FP=03] Based on primary','[FP=04] Set colors','[FP=05] Based on set','[FP=06] Party','[FP=07] Cloud','[FP=08] Lava','[FP=09] Ocean','[FP=10] Forest','[FP=11] Rainbow','[FP=12] Rainbow bands','[FP=13] Sunset','[FP=14] Rivendell','[FP=15] Breeze','[FP=16] Red & Blue','[FP=17] Yellowout','[FP=18] Analoguous','[FP=19] Splash','[FP=20] Pastel','[FP=21] Sunset 2','[FP=22] Beech','[FP=23] Vintage','[FP=24] Departure','[FP=25] Landscape','[FP=26] Beach','[FP=27] Sherbet','[FP=28] Hult','[FP=29] Hult 64','[FP=30] Drywet','[FP=31] Jul','[FP=32] Grintage','[FP=33] Rewhi','[FP=34] Tertiary','[FP=35] Fire','[FP=36] Icefire','[FP=37] Cyane','[FP=38] Light Pink','[FP=39] Autumn','[FP=40] Magenta']|random }}"
- service: mqtt.publish
data_template:
topic: wled/bar_led/api
payload: "SX={{ (range(0, 255)|random) }}"