TX_OUTCLOCK_PHASE_SHIFT in soft LVDS

I set "Desired transmitter outclock phase shift" of MAX10 soft LVDS setting as below,

// Retrieval info: <generic name = "FUNCTIONAL_MODE" value = "TX" />

// Retrieval info: <generic name = "USE_EXTERNAL_PLL_UI" value = "false" />

// Retrieval info: <generic name = "TX_OUTCLOCK_PHASE_SHIFT_UI" value = "49.29" />

(The above are in the generated file)

.tx_outclock

.tx_out

No change was seen in the phase relationship.

Do I need to set anything else?

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thankyou​